diff --git a/app/controllers/posts_controller.rb b/app/controllers/posts_controller.rb
index 225e3c4..3a48aa2 100644
--- a/app/controllers/posts_controller.rb
+++ b/app/controllers/posts_controller.rb
@@ -45,6 +45,9 @@ class PostsController < ApplicationController
     @post = Post.new(site: @site, lang: @lang, template: @template)
     @post.update_attributes(repair_nested_params(post_params))
 
+    # El author no se modifica
+    @post.update_attributes({author: current_user.username})
+
     if @post.save
       redirect_to site_posts_path(@site, lang: @lang)
     else
@@ -69,6 +72,11 @@ class PostsController < ApplicationController
 
     @post.update_attributes(repair_nested_params(post_params))
 
+    # Solo las usuarias pueden modificar la autoría
+    if current_user.is_a? Usuaria
+      @post.update_attributes({author: params[:post][:author]})
+    end
+
     if @post.save
       redirect_to site_posts_path(@site, category: session[:category], lang: @lang)
     else
diff --git a/app/views/posts/_form.haml b/app/views/posts/_form.haml
index edd4d73..13b1804 100644
--- a/app/views/posts/_form.haml
+++ b/app/views/posts/_form.haml
@@ -19,6 +19,17 @@
   = hidden_field_tag 'template', params[:template]
   .form-group
     = submit_tag t('posts.save'), class: 'btn btn-success submit-post'
+  - if current_user.is_a? Usuaria
+    .form-group
+      = label_tag 'post_author', t('posts.author')
+      - todxs = (@site.usuarias + @site.invitadxs).map(&:username)
+      = select_tag 'post[author]',
+        options_for_select(todxs, @post.author),
+        { class: 'form-control select2',
+          data: { tags: true,
+          placeholder: t('posts.select.placeholder'),
+          'allow-clear': true } }
+      %small.text-muted.form-text= t('posts.author_help')
   - if @post.has_field? :dir
     .form-group
       = label_tag 'post_dir', t('posts.dir')
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 8be8106..1b45dd3 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -173,6 +173,8 @@ en:
     index: 'Posts'
     edit: 'Edit'
     save: 'Save'
+    author: 'Author'
+    author_help: 'You can change the authorship of the post.  If your site accepts guests, changing the authorship to an e-mail address will allow them to edit the post.'
     date: 'Publication date'
     date_help: 'This changes the articles order!'
     title: 'Title'
diff --git a/config/locales/es.yml b/config/locales/es.yml
index f392465..859a113 100644
--- a/config/locales/es.yml
+++ b/config/locales/es.yml
@@ -171,6 +171,8 @@ es:
     index: 'Artículos'
     edit: 'Editar'
     save: 'Guardar'
+    author: 'Autorx'
+    author_help: 'Puedes cambiar la autoría del artículo aquí.  Si el sitio acepta invitadxs, poner la dirección de correo de alguien aquí le permite editarlo.'
     date: 'Fecha de publicación'
     date_help: '¡Esto cambia el orden de los artículos!'
     title: 'Título'