diff --git a/docs/feature_swap_hands.md b/docs/feature_swap_hands.md
index 009477d203..cbc574b6b8 100644
--- a/docs/feature_swap_hands.md
+++ b/docs/feature_swap_hands.md
@@ -7,7 +7,7 @@ The swap-hands action allows support for one-handed typing without requiring a s
 The configuration table is a simple 2-dimensional array to map from column/row to new column/row. Example `hand_swap_config` for Planck:
 
 ```C
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
   {{11, 0}, {10, 0}, {9, 0}, {8, 0}, {7, 0}, {6, 0}, {5, 0}, {4, 0}, {3, 0}, {2, 0}, {1, 0}, {0, 0}},
   {{11, 1}, {10, 1}, {9, 1}, {8, 1}, {7, 1}, {6, 1}, {5, 1}, {4, 1}, {3, 1}, {2, 1}, {1, 1}, {0, 1}},
   {{11, 2}, {10, 2}, {9, 2}, {8, 2}, {7, 2}, {6, 2}, {5, 2}, {4, 2}, {3, 2}, {2, 2}, {1, 2}, {0, 2}},
diff --git a/docs/ja/feature_swap_hands.md b/docs/ja/feature_swap_hands.md
index 3150801c55..5164584e8a 100644
--- a/docs/ja/feature_swap_hands.md
+++ b/docs/ja/feature_swap_hands.md
@@ -12,7 +12,7 @@
 設定テーブルは列/行から新しい列/行にマップするための単純な2次元配列です。Planck の `hand_swap_config` の例:
 
 ```C
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
   {{11, 0}, {10, 0}, {9, 0}, {8, 0}, {7, 0}, {6, 0}, {5, 0}, {4, 0}, {3, 0}, {2, 0}, {1, 0}, {0, 0}},
   {{11, 1}, {10, 1}, {9, 1}, {8, 1}, {7, 1}, {6, 1}, {5, 1}, {4, 1}, {3, 1}, {2, 1}, {1, 1}, {0, 1}},
   {{11, 2}, {10, 2}, {9, 2}, {8, 2}, {7, 2}, {6, 2}, {5, 2}, {4, 2}, {3, 2}, {2, 2}, {1, 2}, {0, 2}},
diff --git a/keyboards/40percentclub/25/25.c b/keyboards/40percentclub/25/25.c
index 54a42d263c..de1b038aa8 100644
--- a/keyboards/40percentclub/25/25.c
+++ b/keyboards/40percentclub/25/25.c
@@ -44,7 +44,7 @@ void led_set_kb(uint8_t usb_led) {
 
 #ifdef SWAP_HANDS_ENABLE
 __attribute__ ((weak))
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
 	{{4, 5}, {3, 5}, {2, 5}, {1, 5}, {0, 5}},
 	{{4, 6}, {3, 6}, {2, 6}, {1, 6}, {0, 6}},
 	{{4, 7}, {3, 7}, {2, 7}, {1, 7}, {0, 7}},
diff --git a/keyboards/40percentclub/6lit/6lit.c b/keyboards/40percentclub/6lit/6lit.c
index fd3ae7d009..59d7e33bd6 100644
--- a/keyboards/40percentclub/6lit/6lit.c
+++ b/keyboards/40percentclub/6lit/6lit.c
@@ -44,7 +44,7 @@ void led_set_kb(uint8_t usb_led) {
 
 #ifdef SWAP_HANDS_ENABLE
 __attribute__ ((weak))
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
 	{{2, 2}, {1, 2}, {0, 2}},
 	{{2, 3}, {1, 3}, {0, 3}},
 	{{0, 0}, {1, 0}, {2, 0}},
diff --git a/keyboards/40percentclub/foobar/foobar.c b/keyboards/40percentclub/foobar/foobar.c
index c032056a15..b0a1518df1 100644
--- a/keyboards/40percentclub/foobar/foobar.c
+++ b/keyboards/40percentclub/foobar/foobar.c
@@ -44,7 +44,7 @@ void led_set_kb(uint8_t usb_led) {
 
 #ifdef SWAP_HANDS_ENABLE
 __attribute__ ((weak))
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
 	{{4, 3}, {3, 3}, {2, 3}, {1, 3}, {0, 3}},
 	{{4, 4}, {3, 4}, {2, 4}, {1, 4}, {0, 4}},
 	{{4, 5}, {3, 5}, {2, 5}, {1, 5}, {0, 5}},
diff --git a/keyboards/adkb96/adkb96.c b/keyboards/adkb96/adkb96.c
index 9a1c85a2ce..93230ee00c 100644
--- a/keyboards/adkb96/adkb96.c
+++ b/keyboards/adkb96/adkb96.c
@@ -2,7 +2,7 @@
 
 #ifdef SWAP_HANDS_ENABLE
 __attribute__ ((weak))
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
   {{0, 6}, {1, 6}, {2, 6}, {3, 6}, {4, 6}, {5, 6}, {6, 6}, {7, 6}},
   {{0, 7}, {1, 7}, {2, 7}, {3, 7}, {4, 7}, {5, 7}, {6, 7}, {7, 7}},
   {{0, 8}, {1, 8}, {2, 8}, {3, 8}, {4, 8}, {5, 8}, {6, 8}, {7, 8}},
diff --git a/keyboards/centromere/centromere.c b/keyboards/centromere/centromere.c
index 269c60fd75..8d46520e38 100644
--- a/keyboards/centromere/centromere.c
+++ b/keyboards/centromere/centromere.c
@@ -5,21 +5,21 @@ void led_init(void) {
     setPinOutput(C4); // Set red LED pin as output
     setPinOutput(C5); // Set blue LED pin as output
     setPinOutput(D1); // Set green LED pin as output
-    
+
     writePinHigh(C4); // Turn off red LED pin
     writePinHigh(C5); // Turn off blue LED pin
     writePinHigh(D1); // Turn off green LED pin
-    
+
 #else
 
     setPinOutput(F4); // Set red LED pin as output
     setPinOutput(F5); // Set blue LED pin as output
     setPinOutput(D1); // Set green LED pin as output
-    
+
     writePinHigh(F4); // Turn off red LED pin
     writePinHigh(F5); // Turn off blue LED pin
     writePinHigh(D1); // Turn off green LED pin
-    
+
 #endif
 
 }
@@ -33,7 +33,7 @@ void matrix_init_kb(void) {
 
 #ifdef SWAP_HANDS_ENABLE
 __attribute__ ((weak))
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
 {{9, 0}, {8, 0}, {7, 0}, {6, 0}, {5, 0}, {4, 0}, {3, 0}, {2, 0}, {1, 0}, {0, 0}},
 {{9, 1}, {8, 1}, {7, 1}, {6, 1}, {5, 1}, {4, 1}, {3, 1}, {2, 1}, {1, 1}, {0, 1}},
 {{9, 2}, {8, 2}, {7, 2}, {6, 2}, {5, 2}, {4, 2}, {3, 2}, {2, 2}, {1, 2}, {0, 2}},
diff --git a/keyboards/crkbd/crkbd.c b/keyboards/crkbd/crkbd.c
index ab1381a39b..6220c9822a 100644
--- a/keyboards/crkbd/crkbd.c
+++ b/keyboards/crkbd/crkbd.c
@@ -20,7 +20,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #ifdef SWAP_HANDS_ENABLE
 __attribute__ ((weak))
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
 	// Left
 	{{0, 4}, {1, 4}, {2, 4}, {3, 4}, {4, 4}, {5, 4}},
 	{{0, 5}, {1, 5}, {2, 5}, {3, 5}, {4, 5}, {5, 5}},
@@ -33,4 +33,3 @@ const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
 	{{0, 3}, {1, 3}, {2, 3}, {3, 3}, {4, 3}, {5, 3}}
 };
 #endif
-
diff --git a/keyboards/ergo42/ergo42.c b/keyboards/ergo42/ergo42.c
index e42dcb2261..bd7a7ffe19 100644
--- a/keyboards/ergo42/ergo42.c
+++ b/keyboards/ergo42/ergo42.c
@@ -2,7 +2,7 @@
 
 #ifdef SWAP_HANDS_ENABLE
 __attribute__ ((weak))
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
 
   {{0, 4}, {1, 4}, {2, 4}, {3, 4}, {4, 4}, {5, 4}, {6, 4}},
   {{0, 5}, {1, 5}, {2, 5}, {3, 5}, {4, 5}, {5, 5}, {6, 5}},
diff --git a/keyboards/ergodox_ez/ergodox_ez.c b/keyboards/ergodox_ez/ergodox_ez.c
index e6f48c49fb..4d35675211 100644
--- a/keyboards/ergodox_ez/ergodox_ez.c
+++ b/keyboards/ergodox_ez/ergodox_ez.c
@@ -220,7 +220,7 @@ uint8_t ergodox_left_leds_update(void) {
 #ifdef SWAP_HANDS_ENABLE
 __attribute__ ((weak))
 // swap-hands action needs a matrix to define the swap
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
     /* Left hand, matrix positions */
     {{0,13}, {1,13}, {2,13}, {3,13}, {4,13}, {5,13}},
     {{0,12}, {1,12}, {2,12}, {3,12}, {4,12}, {5,12}},
diff --git a/keyboards/ergodox_infinity/ergodox_infinity.c b/keyboards/ergodox_infinity/ergodox_infinity.c
index a9962f96a0..97b628470b 100644
--- a/keyboards/ergodox_infinity/ergodox_infinity.c
+++ b/keyboards/ergodox_infinity/ergodox_infinity.c
@@ -205,7 +205,7 @@ void ergodox_right_led_3_set(uint8_t n) {
 
 #ifdef SWAP_HANDS_ENABLE
 __attribute__ ((weak))
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
     {{0, 9}, {1, 9}, {2, 9}, {3, 9}, {4, 9}},
     {{0, 10}, {1, 10}, {2, 10}, {3, 10}, {4, 10}},
     {{0, 11}, {1, 11}, {2, 11}, {3, 11}, {4, 11}},
diff --git a/keyboards/ergoslab/rev1/rev1.c b/keyboards/ergoslab/rev1/rev1.c
index 0e3e0fe996..115dab51e4 100644
--- a/keyboards/ergoslab/rev1/rev1.c
+++ b/keyboards/ergoslab/rev1/rev1.c
@@ -2,7 +2,7 @@
 
 #ifdef SWAP_HANDS_ENABLE
 __attribute__ ((weak))
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
     {{0, 5}, {1, 5}, {2, 5}, {3, 5}, {4, 5}, {5, 5}},
     {{0, 6}, {1, 6}, {2, 6}, {3, 6}, {4, 6}, {5, 6}},
     {{0, 7}, {1, 7}, {2, 7}, {3, 7}, {4, 7}, {5, 7}},
diff --git a/keyboards/gergo/gergo.c b/keyboards/gergo/gergo.c
index fab8d0f44c..ba359f8145 100644
--- a/keyboards/gergo/gergo.c
+++ b/keyboards/gergo/gergo.c
@@ -65,7 +65,7 @@ out:
     return mcp23018_status;
 }
 
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
     { {0,0}, {0,7}, {2,7}, {3,7} },
     { {0,8}, {1,8}, {2,8}, {3,8} },
     { {0,9}, {1,9}, {2,9}, {3,9} },
diff --git a/keyboards/handwired/dactyl/dactyl.c b/keyboards/handwired/dactyl/dactyl.c
index 81b9dce0f9..ff9b4e08af 100644
--- a/keyboards/handwired/dactyl/dactyl.c
+++ b/keyboards/handwired/dactyl/dactyl.c
@@ -4,7 +4,7 @@
 #ifdef SWAP_HANDS_ENABLE
 __attribute__ ((weak))
 // swap-hands action needs a matrix to define the swap
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
     {{0,11}, {0,10}, {0,9},  {0,8},  {0,7},  {0,6},     {0,5},  {0,4},  {0,3},  {0,2},  {0,1},  {0,0}},
     {{1,11}, {1,11}, {1,9},  {1,8},  {1,7},  {1,6},     {1,5},  {1,4},  {1,3},  {1,2},  {1,1},  {1,0}},
     {{2,11}, {2,12}, {2,9},  {2,8},  {2,7},  {2,6},     {2,5},  {2,4},  {2,3},  {2,2},  {2,1},  {2,0}},
diff --git a/keyboards/handwired/dactyl_manuform/5x6_right_trackball/5x6_right_trackball.c b/keyboards/handwired/dactyl_manuform/5x6_right_trackball/5x6_right_trackball.c
index 69f7500957..4f1b3f0bbf 100644
--- a/keyboards/handwired/dactyl_manuform/5x6_right_trackball/5x6_right_trackball.c
+++ b/keyboards/handwired/dactyl_manuform/5x6_right_trackball/5x6_right_trackball.c
@@ -206,7 +206,7 @@ void pointing_device_send(void) {
 #endif
 
 #ifdef SWAP_HANDS_ENABLE
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
     /* Left hand, matrix positions */
     {{5, 6}, {4, 6}, {3, 6}, {2, 6}, {1, 6}, {0, 6}},
     {{5, 7}, {4, 7}, {3, 7}, {2, 7}, {1, 7}, {0, 7}},
diff --git a/keyboards/handwired/pterodactyl/pterodactyl.c b/keyboards/handwired/pterodactyl/pterodactyl.c
index 736b0a62c4..f379569f5a 100644
--- a/keyboards/handwired/pterodactyl/pterodactyl.c
+++ b/keyboards/handwired/pterodactyl/pterodactyl.c
@@ -3,7 +3,7 @@
 #ifdef SWAP_HANDS_ENABLE
 __attribute__ ((weak))
 // swap-hands action needs a matrix to define the swap
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
     {{0,11}, {0,10}, {0,9},  {0,8},  {0,7},  {0,6},     {0,5},  {0,4},  {0,3},  {0,2},  {0,1},  {0,0}},
     {{1,11}, {1,11}, {1,9},  {1,8},  {1,7},  {1,6},     {1,5},  {1,4},  {1,3},  {1,2},  {1,1},  {1,0}},
     {{2,11}, {2,12}, {2,9},  {2,8},  {2,7},  {2,6},     {2,5},  {2,4},  {2,3},  {2,2},  {2,1},  {2,0}},
diff --git a/keyboards/jian/handwired/handwired.c b/keyboards/jian/handwired/handwired.c
index bcb7ec7102..2c14518299 100644
--- a/keyboards/jian/handwired/handwired.c
+++ b/keyboards/jian/handwired/handwired.c
@@ -1,6 +1,6 @@
 #include "handwired.h"
 
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
   {{13, 0}, {12, 0}, {11, 0}, {10, 0}, {9, 0}, {8, 0}, {7, 0}, {6, 0}, {5, 0}, {4, 0}, {3, 0}, {2, 0}, {1, 0}, {0, 0}},
   {{13, 1}, {12, 1}, {11, 1}, {10, 1}, {9, 1}, {8, 1}, {7, 1}, {6, 1}, {5, 1}, {4, 1}, {3, 1}, {2, 1}, {1, 1}, {0, 1}},
   {{13, 2}, {12, 2}, {11, 2}, {10, 2}, {9, 2}, {8, 2}, {7, 2}, {6, 2}, {5, 2}, {4, 2}, {3, 2}, {2, 2}, {1, 2}, {0, 2}},
diff --git a/keyboards/jian/nsrev2/nsrev2.c b/keyboards/jian/nsrev2/nsrev2.c
index c3acff55ee..48827416f1 100644
--- a/keyboards/jian/nsrev2/nsrev2.c
+++ b/keyboards/jian/nsrev2/nsrev2.c
@@ -2,7 +2,7 @@
 
 #ifdef SWAP_HANDS_ENABLE
 __attribute__ ((weak))
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
   {{0, 4}, {1, 4}, {2, 4}, {3, 4}, {4, 4}, {5, 4}},
   {{0, 5}, {1, 5}, {2, 5}, {3, 5}, {4, 5}, {5, 5}},
   {{0, 6}, {1, 6}, {2, 6}, {3, 6}, {4, 6}, {5, 6}},
diff --git a/keyboards/jian/rev1/rev1.c b/keyboards/jian/rev1/rev1.c
index 1c7e936270..40d9f3beda 100644
--- a/keyboards/jian/rev1/rev1.c
+++ b/keyboards/jian/rev1/rev1.c
@@ -2,7 +2,7 @@
 
 #ifdef SWAP_HANDS_ENABLE
 __attribute__ ((weak))
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
   {{0, 4}, {1, 4}, {2, 4}, {3, 4}, {4, 4}, {5, 4}, {6, 4}},
   {{0, 5}, {1, 5}, {2, 5}, {3, 5}, {4, 5}, {5, 5}, {6, 5}},
   {{0, 6}, {1, 6}, {2, 6}, {3, 6}, {4, 6}, {5, 6}, {6, 6}},
diff --git a/keyboards/jian/rev2/rev2.c b/keyboards/jian/rev2/rev2.c
index 09824c6652..b18676af38 100644
--- a/keyboards/jian/rev2/rev2.c
+++ b/keyboards/jian/rev2/rev2.c
@@ -2,7 +2,7 @@
 
 #ifdef SWAP_HANDS_ENABLE
 __attribute__ ((weak))
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
   {{0, 4}, {1, 4}, {2, 4}, {3, 4}, {4, 4}, {5, 4}},
   {{0, 5}, {1, 5}, {2, 5}, {3, 5}, {4, 5}, {5, 5}},
   {{0, 6}, {1, 6}, {2, 6}, {3, 6}, {4, 6}, {5, 6}},
diff --git a/keyboards/keebio/iris/rev1/rev1.c b/keyboards/keebio/iris/rev1/rev1.c
index 9694d122df..6249d2f0ac 100644
--- a/keyboards/keebio/iris/rev1/rev1.c
+++ b/keyboards/keebio/iris/rev1/rev1.c
@@ -10,7 +10,7 @@ void led_set_kb(uint8_t usb_led) {
 #ifdef SWAP_HANDS_ENABLE
 __attribute__ ((weak))
 // swap-hands action needs a matrix to define the swap
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
     /* Left hand, matrix positions */
     {{0,5}, {1,5}, {2,5}, {3,5}, {4,5}, {5,5}},
     {{0,6}, {1,6}, {2,6}, {3,6}, {4,6}, {5,6}},
diff --git a/keyboards/keebio/iris/rev1_led/rev1_led.c b/keyboards/keebio/iris/rev1_led/rev1_led.c
index af5fc9440b..c330189c7c 100644
--- a/keyboards/keebio/iris/rev1_led/rev1_led.c
+++ b/keyboards/keebio/iris/rev1_led/rev1_led.c
@@ -10,7 +10,7 @@ void led_set_kb(uint8_t usb_led) {
 #ifdef SWAP_HANDS_ENABLE
 __attribute__ ((weak))
 // swap-hands action needs a matrix to define the swap
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
     /* Left hand, matrix positions */
     {{0,5}, {1,5}, {2,5}, {3,5}, {4,5}, {5,5}},
     {{0,6}, {1,6}, {2,6}, {3,6}, {4,6}, {5,6}},
diff --git a/keyboards/keebio/iris/rev2/rev2.c b/keyboards/keebio/iris/rev2/rev2.c
index 70c30695ad..e8c2a66c98 100644
--- a/keyboards/keebio/iris/rev2/rev2.c
+++ b/keyboards/keebio/iris/rev2/rev2.c
@@ -3,7 +3,7 @@
 #ifdef SWAP_HANDS_ENABLE
 __attribute__ ((weak))
 // swap-hands action needs a matrix to define the swap
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
     /* Left hand, matrix positions */
     {{0,5}, {1,5}, {2,5}, {3,5}, {4,5}, {5,5}},
     {{0,6}, {1,6}, {2,6}, {3,6}, {4,6}, {5,6}},
diff --git a/keyboards/keebio/iris/rev3/rev3.c b/keyboards/keebio/iris/rev3/rev3.c
index f58c2093c4..b97b097b78 100644
--- a/keyboards/keebio/iris/rev3/rev3.c
+++ b/keyboards/keebio/iris/rev3/rev3.c
@@ -3,7 +3,7 @@
 #ifdef SWAP_HANDS_ENABLE
 __attribute__ ((weak))
 // swap-hands action needs a matrix to define the swap
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
     /* Left hand, matrix positions */
     {{0,5}, {1,5}, {2,5}, {3,5}, {4,5}, {5,5}},
     {{0,6}, {1,6}, {2,6}, {3,6}, {4,6}, {5,6}},
diff --git a/keyboards/keebio/levinson/levinson.c b/keyboards/keebio/levinson/levinson.c
index 95f3fe9ef8..b361640bcf 100644
--- a/keyboards/keebio/levinson/levinson.c
+++ b/keyboards/keebio/levinson/levinson.c
@@ -2,7 +2,7 @@
 
 #ifdef SWAP_HANDS_ENABLE
 __attribute__ ((weak))
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
 
   {{5, 4}, {4, 4}, {3, 4}, {2, 4}, {1, 4}, {0, 4}},
   {{5, 5}, {4, 5}, {3, 5}, {2, 5}, {1, 5}, {0, 5}},
diff --git a/keyboards/keebio/wavelet/wavelet.c b/keyboards/keebio/wavelet/wavelet.c
index 2bc9c65a52..68011e266c 100644
--- a/keyboards/keebio/wavelet/wavelet.c
+++ b/keyboards/keebio/wavelet/wavelet.c
@@ -15,7 +15,7 @@ void matrix_init_kb(void) {
 
 #ifdef SWAP_HANDS_ENABLE
 __attribute__ ((weak))
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
 
   {{5, 4}, {4, 4}, {3, 4}, {2, 4}, {1, 4}, {0, 4}},
   {{5, 5}, {4, 5}, {3, 5}, {2, 5}, {1, 5}, {0, 5}},
diff --git a/keyboards/kyria/rev1/rev1.c b/keyboards/kyria/rev1/rev1.c
index 970a359e71..622ac279bd 100644
--- a/keyboards/kyria/rev1/rev1.c
+++ b/keyboards/kyria/rev1/rev1.c
@@ -3,7 +3,7 @@
 #ifdef SWAP_HANDS_ENABLE
 __attribute__ ((weak))
 
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
 	{{0, 4}, {1, 4}, {2, 4}, {3, 4}, {4, 4}, {5, 4}, {6, 4}, {7, 4}},
 	{{0, 5}, {1, 5}, {2, 5}, {3, 5}, {4, 5}, {5, 5}, {6, 5}, {7, 5}},
 	{{0, 6}, {1, 6}, {2, 6}, {3, 6}, {4, 6}, {5, 6}, {6, 6}, {7, 6}},
@@ -12,6 +12,6 @@ const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
 	{{0, 1}, {1, 1}, {2, 1}, {3, 1}, {4, 1}, {5, 1}, {6, 1}, {7, 1}},
 	{{0, 2}, {1, 2}, {2, 2}, {3, 2}, {4, 2}, {5, 2}, {6, 2}, {7, 2}},
 	{{0, 3}, {1, 3}, {2, 3}, {3, 3}, {4, 3}, {5, 3}, {6, 3}, {7, 3}}
-};	
+};
 
 #endif
diff --git a/keyboards/lets_split/lets_split.c b/keyboards/lets_split/lets_split.c
index c400ab7bb8..ee0c931be2 100644
--- a/keyboards/lets_split/lets_split.c
+++ b/keyboards/lets_split/lets_split.c
@@ -2,7 +2,7 @@
 
 #ifdef SWAP_HANDS_ENABLE
 __attribute__ ((weak))
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
 
   {{0, 4}, {1, 4}, {2, 4}, {3, 4}, {4, 4}, {5, 4}},
   {{0, 5}, {1, 5}, {2, 5}, {3, 5}, {4, 5}, {5, 5}},
diff --git a/keyboards/lets_split_eh/lets_split_eh.c b/keyboards/lets_split_eh/lets_split_eh.c
index 7249f54cf2..37075aa67d 100644
--- a/keyboards/lets_split_eh/lets_split_eh.c
+++ b/keyboards/lets_split_eh/lets_split_eh.c
@@ -2,7 +2,7 @@
 
 #ifdef SWAP_HANDS_ENABLE
 __attribute__ ((weak))
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
 
   {{0, 4}, {1, 4}, {2, 4}, {3, 4}, {4, 4}, {5, 4}},
   {{0, 5}, {1, 5}, {2, 5}, {3, 5}, {4, 5}, {5, 5}},
diff --git a/keyboards/mitosis/mitosis.c b/keyboards/mitosis/mitosis.c
index 50b6d8452f..ea3d1c99d7 100644
--- a/keyboards/mitosis/mitosis.c
+++ b/keyboards/mitosis/mitosis.c
@@ -16,7 +16,7 @@ void matrix_init_kb(void) {
 
 #ifdef SWAP_HANDS_ENABLE
 __attribute__ ((weak))
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
 {{9, 0}, {8, 0}, {7, 0}, {6, 0}, {5, 0}, {4, 0}, {3, 0}, {2, 0}, {1, 0}, {0, 0}},
 {{9, 1}, {8, 1}, {7, 1}, {6, 1}, {5, 1}, {4, 1}, {3, 1}, {2, 1}, {1, 1}, {0, 1}},
 {{9, 2}, {8, 2}, {7, 2}, {6, 2}, {5, 2}, {4, 2}, {3, 2}, {2, 2}, {1, 2}, {0, 2}},
diff --git a/keyboards/moonlander/moonlander.c b/keyboards/moonlander/moonlander.c
index 39f61b5c40..bc4047b847 100644
--- a/keyboards/moonlander/moonlander.c
+++ b/keyboards/moonlander/moonlander.c
@@ -370,7 +370,7 @@ bool music_mask_kb(uint16_t keycode) {
 #ifdef SWAP_HANDS_ENABLE
 // swap-hands action needs a matrix to define the swap
 // clang-format off
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
     /* Left hand, matrix positions */
     {{6,6}, {5,6}, {4,6}, {3,6}, {2,6}, {1,6},{0,6}},
     {{6,7}, {5,7}, {4,7}, {3,7}, {2,7}, {1,7},{0,7}},
diff --git a/keyboards/niu_mini/niu_mini.c b/keyboards/niu_mini/niu_mini.c
index 835625ee4f..cd9c0cdfed 100644
--- a/keyboards/niu_mini/niu_mini.c
+++ b/keyboards/niu_mini/niu_mini.c
@@ -2,7 +2,7 @@
 
 #ifdef SWAP_HANDS_ENABLE
 __attribute__ ((weak))
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
     {{11, 0}, {10, 0}, {9, 0}, {8, 0}, {7, 0}, {6, 0}, {5, 0}, {4, 0}, {3, 0}, {2, 0}, {1, 0}, {0, 0}},
     {{11, 1}, {10, 1}, {9, 1}, {8, 1}, {7, 1}, {6, 1}, {5, 1}, {4, 1}, {3, 1}, {2, 1}, {1, 1}, {0, 1}},
     {{11, 2}, {10, 2}, {9, 2}, {8, 2}, {7, 2}, {6, 2}, {5, 2}, {4, 2}, {3, 2}, {2, 2}, {1, 2}, {0, 2}},
diff --git a/keyboards/orthodox/rev1/rev1.c b/keyboards/orthodox/rev1/rev1.c
index ecb908b3ae..db8d435c33 100644
--- a/keyboards/orthodox/rev1/rev1.c
+++ b/keyboards/orthodox/rev1/rev1.c
@@ -37,7 +37,7 @@ void matrix_init_kb(void) {
 #ifdef SWAP_HANDS_ENABLE
 __attribute__ ((weak))
 // swap-hands action needs a matrix to define the swap
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
     /* Left hand, matrix positions */
     {{0,3}, {1,3}, {2,3}, {3,3}, {4,3}, {5,3}, {6,3}, {7,3}, {8,3}},
     {{0,4}, {1,4}, {2,4}, {3,4}, {4,4}, {5,4}, {6,4}, {7,4}, {8,4}},
diff --git a/keyboards/orthodox/rev3/rev3.c b/keyboards/orthodox/rev3/rev3.c
index ecb908b3ae..db8d435c33 100644
--- a/keyboards/orthodox/rev3/rev3.c
+++ b/keyboards/orthodox/rev3/rev3.c
@@ -37,7 +37,7 @@ void matrix_init_kb(void) {
 #ifdef SWAP_HANDS_ENABLE
 __attribute__ ((weak))
 // swap-hands action needs a matrix to define the swap
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
     /* Left hand, matrix positions */
     {{0,3}, {1,3}, {2,3}, {3,3}, {4,3}, {5,3}, {6,3}, {7,3}, {8,3}},
     {{0,4}, {1,4}, {2,4}, {3,4}, {4,4}, {5,4}, {6,4}, {7,4}, {8,4}},
diff --git a/keyboards/orthodox/rev3_teensy/rev3_teensy.c b/keyboards/orthodox/rev3_teensy/rev3_teensy.c
index ecb908b3ae..db8d435c33 100644
--- a/keyboards/orthodox/rev3_teensy/rev3_teensy.c
+++ b/keyboards/orthodox/rev3_teensy/rev3_teensy.c
@@ -37,7 +37,7 @@ void matrix_init_kb(void) {
 #ifdef SWAP_HANDS_ENABLE
 __attribute__ ((weak))
 // swap-hands action needs a matrix to define the swap
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
     /* Left hand, matrix positions */
     {{0,3}, {1,3}, {2,3}, {3,3}, {4,3}, {5,3}, {6,3}, {7,3}, {8,3}},
     {{0,4}, {1,4}, {2,4}, {3,4}, {4,4}, {5,4}, {6,4}, {7,4}, {8,4}},
diff --git a/keyboards/planck/planck.c b/keyboards/planck/planck.c
index 5a65d5e5f3..1f824efaae 100644
--- a/keyboards/planck/planck.c
+++ b/keyboards/planck/planck.c
@@ -2,7 +2,7 @@
 
 #ifdef SWAP_HANDS_ENABLE
 __attribute__ ((weak))
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
   {{11, 0}, {10, 0}, {9, 0}, {8, 0}, {7, 0}, {6, 0}, {5, 0}, {4, 0}, {3, 0}, {2, 0}, {1, 0}, {0, 0}},
   {{11, 1}, {10, 1}, {9, 1}, {8, 1}, {7, 1}, {6, 1}, {5, 1}, {4, 1}, {3, 1}, {2, 1}, {1, 1}, {0, 1}},
   {{11, 2}, {10, 2}, {9, 2}, {8, 2}, {7, 2}, {6, 2}, {5, 2}, {4, 2}, {3, 2}, {2, 2}, {1, 2}, {0, 2}},
diff --git a/keyboards/preonic/rev1/rev1.c b/keyboards/preonic/rev1/rev1.c
index c9fd8330ef..bf83743605 100644
--- a/keyboards/preonic/rev1/rev1.c
+++ b/keyboards/preonic/rev1/rev1.c
@@ -26,7 +26,7 @@ void matrix_init_kb(void) {
 
 #ifdef SWAP_HANDS_ENABLE
   __attribute__ ((weak))
-  const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+  const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
     {{11, 0}, {10, 0}, {9, 0}, {8, 0}, {7, 0}, {6, 0}, {5, 0}, {4, 0}, {3, 0}, {2, 0}, {1, 0}, {0, 0}},
     {{11, 1}, {10, 1}, {9, 1}, {8, 1}, {7, 1}, {6, 1}, {5, 1}, {4, 1}, {3, 1}, {2, 1}, {1, 1}, {0, 1}},
     {{11, 2}, {10, 2}, {9, 2}, {8, 2}, {7, 2}, {6, 2}, {5, 2}, {4, 2}, {3, 2}, {2, 2}, {1, 2}, {0, 2}},
diff --git a/keyboards/preonic/rev2/rev2.c b/keyboards/preonic/rev2/rev2.c
index c0e72620ed..a3929249d0 100644
--- a/keyboards/preonic/rev2/rev2.c
+++ b/keyboards/preonic/rev2/rev2.c
@@ -26,7 +26,7 @@ void matrix_init_kb(void) {
 
 #ifdef SWAP_HANDS_ENABLE
   __attribute__ ((weak))
-  const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+  const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
     {{11, 0}, {10, 0}, {9, 0}, {8, 0}, {7, 0}, {6, 0}, {5, 0}, {4, 0}, {3, 0}, {2, 0}, {1, 0}, {0, 0}},
     {{11, 1}, {10, 1}, {9, 1}, {8, 1}, {7, 1}, {6, 1}, {5, 1}, {4, 1}, {3, 1}, {2, 1}, {1, 1}, {0, 1}},
     {{11, 2}, {10, 2}, {9, 2}, {8, 2}, {7, 2}, {6, 2}, {5, 2}, {4, 2}, {3, 2}, {2, 2}, {1, 2}, {0, 2}},
diff --git a/keyboards/preonic/rev3/rev3.c b/keyboards/preonic/rev3/rev3.c
index 161c1c9636..ec8a56108e 100644
--- a/keyboards/preonic/rev3/rev3.c
+++ b/keyboards/preonic/rev3/rev3.c
@@ -63,7 +63,7 @@ void dip_switch_update_user(uint8_t index, bool active) {
 
 #ifdef SWAP_HANDS_ENABLE
 __attribute__ ((weak))
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
     {{5, 4}, {4, 4}, {3, 4}, {2, 4}, {1, 4}, {0, 4}},
     {{5, 5}, {4, 5}, {3, 5}, {2, 5}, {1, 5}, {0, 5}},
     {{5, 6}, {4, 6}, {3, 6}, {2, 6}, {1, 6}, {0, 6}},
diff --git a/keyboards/redox_w/redox_w.c b/keyboards/redox_w/redox_w.c
index 05fa339571..a94e731b39 100644
--- a/keyboards/redox_w/redox_w.c
+++ b/keyboards/redox_w/redox_w.c
@@ -17,7 +17,7 @@ void matrix_init_kb(void) {
 
 #ifdef ONEHAND_ENABLE
 __attribute__ ((weak))
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
 {{13, 0}, {12, 0}, {11, 0}, {10, 0}, {9, 0}, {8, 0}, {7, 0}, {6, 0}, {5, 0}, {4, 0}, {3, 0}, {2, 0}, {1, 0}, {0, 0}},
 {{13, 1}, {12, 1}, {11, 1}, {10, 1}, {9, 1}, {8, 1}, {7, 1}, {6, 1}, {5, 1}, {4, 1}, {3, 1}, {2, 1}, {1, 1}, {0, 1}},
 {{13, 2}, {12, 2}, {11, 2}, {10, 2}, {9, 2}, {8, 2}, {7, 2}, {6, 2}, {5, 2}, {4, 2}, {3, 2}, {2, 2}, {1, 2}, {0, 2}},
diff --git a/keyboards/sirius/uni660/rev1/rev1.c b/keyboards/sirius/uni660/rev1/rev1.c
index d4adac24b5..7cc75ee22a 100644
--- a/keyboards/sirius/uni660/rev1/rev1.c
+++ b/keyboards/sirius/uni660/rev1/rev1.c
@@ -19,7 +19,7 @@ void matrix_init_kb(void) {
 /*
 #ifdef SWAP_HANDS_ENABLE
 __attribute__ ((weak))
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
 {{9, 0}, {8, 0}, {7, 0}, {6, 0}, {5, 0}, {4, 0}, {3, 0}, {2, 0}, {1, 0}, {0, 0}},
 {{9, 1}, {8, 1}, {7, 1}, {6, 1}, {5, 1}, {4, 1}, {3, 1}, {2, 1}, {1, 1}, {0, 1}},
 {{9, 2}, {8, 2}, {7, 2}, {6, 2}, {5, 2}, {4, 2}, {3, 2}, {2, 2}, {1, 2}, {0, 2}},
diff --git a/keyboards/sirius/uni660/rev2/rev2.c b/keyboards/sirius/uni660/rev2/rev2.c
index 048495b992..2c2515c0ed 100644
--- a/keyboards/sirius/uni660/rev2/rev2.c
+++ b/keyboards/sirius/uni660/rev2/rev2.c
@@ -19,7 +19,7 @@ void matrix_init_kb(void) {
 /*
 #ifdef SWAP_HANDS_ENABLE
 __attribute__ ((weak))
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
 {{9, 0}, {8, 0}, {7, 0}, {6, 0}, {5, 0}, {4, 0}, {3, 0}, {2, 0}, {1, 0}, {0, 0}},
 {{9, 1}, {8, 1}, {7, 1}, {6, 1}, {5, 1}, {4, 1}, {3, 1}, {2, 1}, {1, 1}, {0, 1}},
 {{9, 2}, {8, 2}, {7, 2}, {6, 2}, {5, 2}, {4, 2}, {3, 2}, {2, 2}, {1, 2}, {0, 2}},
diff --git a/keyboards/splitty/splitty.c b/keyboards/splitty/splitty.c
index 652d1f781b..707f289832 100644
--- a/keyboards/splitty/splitty.c
+++ b/keyboards/splitty/splitty.c
@@ -19,7 +19,7 @@
 #ifdef SWAP_HANDS_ENABLE
 // clang-format off
 __attribute__ ((weak))
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
 
   {{0, 5}, {1, 5}, {2, 5}, {3, 5}, {4, 5}, {5, 5}, {6, 5}},
   {{0, 6}, {1, 6}, {2, 6}, {3, 6}, {4, 6}, {5, 6}, {6, 6}},
diff --git a/keyboards/telophase/telophase.c b/keyboards/telophase/telophase.c
index 0e04debeb8..7484551c91 100644
--- a/keyboards/telophase/telophase.c
+++ b/keyboards/telophase/telophase.c
@@ -17,7 +17,7 @@ void matrix_init_kb(void) {
 
 #ifdef SWAP_HANDS_ENABLE
 __attribute__ ((weak))
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
 {{12, 0}, {11, 0}, {10, 0}, {9, 0}, {8, 0}, {7, 0}, {6, 0}, {5, 0}, {4, 0}, {3, 0}, {2, 0}, {1, 0}, {0, 0}},
 {{12, 1}, {11, 1}, {10, 1}, {9, 1}, {8, 1}, {7, 1}, {6, 1}, {5, 1}, {4, 1}, {3, 1}, {2, 1}, {1, 1}, {0, 1}},
 {{12, 2}, {11, 2}, {10, 2}, {9, 2}, {8, 2}, {7, 2}, {6, 2}, {5, 2}, {4, 2}, {3, 2}, {2, 2}, {1, 2}, {0, 2}},
diff --git a/keyboards/vitamins_included/vitamins_included.c b/keyboards/vitamins_included/vitamins_included.c
index 650f26001e..078f93e0e6 100644
--- a/keyboards/vitamins_included/vitamins_included.c
+++ b/keyboards/vitamins_included/vitamins_included.c
@@ -2,7 +2,7 @@
 
 #ifdef ONEHAND_ENABLE
 __attribute__ ((weak))
-const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
+const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
 
   {{0, 4}, {1, 4}, {2, 4}, {3, 4}, {4, 4}, {5, 4}},
   {{0, 5}, {1, 5}, {2, 5}, {3, 5}, {4, 5}, {5, 5}},
diff --git a/tmk_core/common/action.c b/tmk_core/common/action.c
index aae5cbfa5f..f41665b06c 100644
--- a/tmk_core/common/action.c
+++ b/tmk_core/common/action.c
@@ -133,7 +133,8 @@ void process_hand_swap(keyevent_t *event) {
     bool             do_swap = event->pressed ? swap_hands : swap_state[pos.row] & (col_bit);
 
     if (do_swap) {
-        event->key = hand_swap_config[pos.row][pos.col];
+        event->key.row = pgm_read_byte(&hand_swap_config[pos.row][pos.col].row);
+        event->key.col = pgm_read_byte(&hand_swap_config[pos.row][pos.col].col);
         swap_state[pos.row] |= col_bit;
     } else {
         swap_state[pos.row] &= ~(col_bit);
diff --git a/tmk_core/common/action.h b/tmk_core/common/action.h
index 9a991de1c2..6c84561785 100644
--- a/tmk_core/common/action.h
+++ b/tmk_core/common/action.h
@@ -78,7 +78,7 @@ extern bool disable_action_cache;
 /* Code for handling one-handed key modifiers. */
 #ifdef SWAP_HANDS_ENABLE
 extern bool           swap_hands;
-extern const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS];
+extern const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS];
 #    if (MATRIX_COLS <= 8)
 typedef uint8_t swap_state_row_t;
 #    elif (MATRIX_COLS <= 16)