diff --git a/core/modules/field/modules/number/number.module b/core/modules/field/modules/number/number.module
index d00c55f..2340199 100644
--- a/core/modules/field/modules/number/number.module
+++ b/core/modules/field/modules/number/number.module
@@ -321,11 +321,29 @@ function number_field_widget_info() {
     'number' => array(
       'label' => t('Text field'),
       'field types' => array('number_integer', 'number_decimal', 'number_float'),
+      'settings' => array(
+        'placeholder' => '',
+      ),
     ),
   );
 }
 
 /**
+ * Implements hook_field_widget_settings_form().
+ */
+function number_field_widget_settings_form($field, $instance) {
+  $form['placeholder'] = array(
+    '#type' => 'textfield',
+    '#title' => t('Placeholder'),
+    '#default_value' => $instance['widget']['settings']['placeholder'],
+    '#description' => t('The placeholder attribute represents a short hint (a word or short phrase) intended to aid the user with data entry. A hint could be a sample value or a brief description of the expected format.'),
+    '#weight' => -1,
+  );
+
+  return $form;
+}
+
+/**
  * Implements hook_field_widget_form().
  */
 function number_field_widget_form(&$form, &$form_state, $field, $instance, $langcode, $items, $delta, $element) {
@@ -345,6 +363,7 @@ function number_field_widget_form(&$form, &$form_state, $field, $instance, $lang
     '#maxlength' => $field['type'] == 'number_decimal' ? $field['settings']['precision'] + 2 : 10,
     // Extract the number type from the field type name for easier validation.
     '#number_type' => str_replace('number_', '', $field['type']),
+    '#placeholder' => $instance['widget']['settings']['placeholder'],
   );
 
   // Add prefix and suffix.
diff --git a/core/modules/taxonomy/taxonomy.module b/core/modules/taxonomy/taxonomy.module
index 3a9258b..e4c719c 100644
--- a/core/modules/taxonomy/taxonomy.module
+++ b/core/modules/taxonomy/taxonomy.module
@@ -1375,6 +1375,7 @@ function taxonomy_field_widget_info() {
       'label' => t('Autocomplete term widget (tagging)'),
       'field types' => array('taxonomy_term_reference'),
       'settings' => array(
+        'placeholder' => '',
         'size' => 60,
         'autocomplete_path' => 'taxonomy/autocomplete',
       ),
@@ -1386,6 +1387,20 @@ function taxonomy_field_widget_info() {
 }
 
 /**
+ * Implements hook_field_widget_settings_form().
+ */
+function taxonomy_field_widget_settings_form($field, $instance) {
+  $form['placeholder'] = array(
+    '#type' => 'textfield',
+    '#title' => t('Placeholder'),
+    '#default_value' => $instance['widget']['settings']['placeholder'],
+    '#description' => t('The placeholder attribute represents a short hint (a word or short phrase) intended to aid the user with data entry. A hint could be a sample value or a brief description of the expected format.'),
+  );
+
+  return $form;
+}
+
+/**
  * Implements hook_field_widget_info_alter().
  */
 function taxonomy_field_widget_info_alter(&$info) {
@@ -1647,6 +1662,7 @@ function taxonomy_field_widget_form(&$form, &$form_state, $field, $instance, $la
     '#size' => $instance['widget']['settings']['size'],
     '#maxlength' => 1024,
     '#element_validate' => array('taxonomy_autocomplete_validate'),
+    '#placeholder' => $instance['widget']['settings']['placeholder'],
   );
 
   return $element;