diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4d7d57da..ec90eaba 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,7 @@
 ## Unreleased
 
 * Remove redundant `aria-required` attribute for required fields. [@aduth](https://github.com/aduth)
+* Add `weekday` input. [@nashby](https://github.com/nashby)
 
 ## 5.3.1
 
diff --git a/README.md b/README.md
index 1f516d9f..97dc60d0 100644
--- a/README.md
+++ b/README.md
@@ -621,6 +621,7 @@ Mapping         | Generated HTML Element               | Database Column Type
 `datetime`      | `datetime select`                    | `datetime/timestamp`
 `date`          | `date select`                        | `date`
 `time`          | `time select`                        | `time`
+`weekday`       | `select` (weekdays as options)       | -
 `select`        | `select`                             | `belongs_to`/`has_many`/`has_and_belongs_to_many` associations
 `radio_buttons` | collection of `input[type=radio]`    | `belongs_to` associations
 `check_boxes`   | collection of `input[type=checkbox]` | `has_many`/`has_and_belongs_to_many` associations
diff --git a/lib/simple_form/inputs.rb b/lib/simple_form/inputs.rb
index 2485d391..2476debf 100644
--- a/lib/simple_form/inputs.rb
+++ b/lib/simple_form/inputs.rb
@@ -22,5 +22,6 @@ module Inputs
     autoload :RichTextAreaInput
     autoload :StringInput
     autoload :TextInput
+    autoload :WeekdayInput
   end
 end
diff --git a/lib/simple_form/inputs/weekday_input.rb b/lib/simple_form/inputs/weekday_input.rb
new file mode 100644
index 00000000..131ae2cc
--- /dev/null
+++ b/lib/simple_form/inputs/weekday_input.rb
@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+module SimpleForm
+  module Inputs
+    class WeekdayInput < CollectionSelectInput
+      enable :placeholder
+
+      def input(wrapper_options = nil)
+        merged_input_options = merge_wrapper_options(input_html_options, wrapper_options)
+
+        @builder.weekday_select(attribute_name, input_options, merged_input_options)
+      end
+    end
+  end
+end
diff --git a/test/inputs/weekday_input_test.rb b/test/inputs/weekday_input_test.rb
new file mode 100644
index 00000000..b8d80370
--- /dev/null
+++ b/test/inputs/weekday_input_test.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+# encoding: UTF-8
+require 'test_helper'
+
+class WeekdayInputTest < ActionView::TestCase
+  test 'input generates a weekday select' do
+    if ActionView::VERSION::MAJOR >= 7
+      with_input_for @user, :born_at, :weekday
+      assert_select 'select.weekday#user_born_at'
+    end
+  end
+
+  test 'input generates a weekday select that accepts placeholder' do
+    if ActionView::VERSION::MAJOR >= 7
+      with_input_for @user, :born_at, :weekday, placeholder: 'Put in a weekday'
+      assert_select 'select.weekday[placeholder="Put in a weekday"]'
+    end
+  end
+end