diff --git a/core/config/schema/core.entity.schema.yml b/core/config/schema/core.entity.schema.yml
index c88ca10bd3..953dae9632 100644
--- a/core/config/schema/core.entity.schema.yml
+++ b/core/config/schema/core.entity.schema.yml
@@ -257,6 +257,9 @@ field.widget.settings.entity_reference_autocomplete_tags:
     placeholder:
       type: label
       label: 'Placeholder'
+    show_id:
+      type: boolean
+      label: 'Show ID'
 
 field.widget.settings.entity_reference_autocomplete:
   type: mapping
@@ -274,6 +277,9 @@ field.widget.settings.entity_reference_autocomplete:
     placeholder:
       type: label
       label: 'Placeholder'
+    show_id:
+      type: boolean
+      label: 'Show ID'
 
 field.formatter.settings.boolean:
   type: mapping
diff --git a/core/lib/Drupal/Core/Entity/Element/EntityAutocomplete.php b/core/lib/Drupal/Core/Entity/Element/EntityAutocomplete.php
index 2cb823aaed..1f2f0a492a 100644
--- a/core/lib/Drupal/Core/Entity/Element/EntityAutocomplete.php
+++ b/core/lib/Drupal/Core/Entity/Element/EntityAutocomplete.php
@@ -116,7 +116,7 @@ public static function valueCallback(&$element, $input, FormStateInterface $form
 
         // Extract the labels from the passed-in entity objects, taking access
         // checks into account.
-        return static::getEntityLabels($element['#default_value']);
+        return static::getEntityLabels($element['#default_value'], $element['#show_id'] ?? TRUE);
       }
     }
 
@@ -365,15 +365,18 @@ protected static function matchEntityByTitle(SelectionInterface $handler, $input
    *
    * @param \Drupal\Core\Entity\EntityInterface[] $entities
    *   An array of entity objects.
+   * @param bool $show_id
+   *   If the label should show the entity id.
    *
    * @return string
    *   A string of entity labels separated by commas.
    */
-  public static function getEntityLabels(array $entities) {
+  public static function getEntityLabels(array $entities, $show_id = TRUE) {
     /** @var \Drupal\Core\Entity\EntityRepositoryInterface $entity_repository */
     $entity_repository = \Drupal::service('entity.repository');
 
     $entity_labels = [];
+    $entity_ids = [];
     foreach ($entities as $entity) {
       // Set the entity in the correct language for display.
       $entity = $entity_repository->getTranslationFromContext($entity);
@@ -383,12 +386,22 @@ public static function getEntityLabels(array $entities) {
       $label = ($entity->access('view label')) ? $entity->label() : t('- Restricted access -');
 
       // Take into account "autocreated" entities.
-      if (!$entity->isNew()) {
+      if (!$entity->isNew() && $show_id) {
         $label .= ' (' . $entity->id() . ')';
       }
 
       // Labels containing commas or quotes must be wrapped in quotes.
       $entity_labels[] = Tags::encode($label);
+      $entity_ids[] = ($entity->access('view label')) ? $entity->id() : -1;
+    }
+
+    $duplicates = array_diff_assoc($entity_labels, array_unique($entity_labels));
+    if (!$show_id && count($duplicates) > 0) {
+      foreach ($entity_labels as $key => $value) {
+        if (in_array($value, $duplicates) && $entity_ids[$key] > 0) {
+          $entity_labels[$key] .= ' (' . $entity_ids[$key] . ')';
+        }
+      }
     }
 
     return implode(', ', $entity_labels);
diff --git a/core/lib/Drupal/Core/Field/Plugin/Field/FieldWidget/EntityReferenceAutocompleteWidget.php b/core/lib/Drupal/Core/Field/Plugin/Field/FieldWidget/EntityReferenceAutocompleteWidget.php
index 68885f24df..b5af9e1859 100644
--- a/core/lib/Drupal/Core/Field/Plugin/Field/FieldWidget/EntityReferenceAutocompleteWidget.php
+++ b/core/lib/Drupal/Core/Field/Plugin/Field/FieldWidget/EntityReferenceAutocompleteWidget.php
@@ -31,6 +31,7 @@ public static function defaultSettings() {
       'match_limit' => 10,
       'size' => 60,
       'placeholder' => '',
+      'show_id' => TRUE,
     ] + parent::defaultSettings();
   }
 
@@ -65,6 +66,12 @@ public function settingsForm(array $form, FormStateInterface $form_state) {
       '#default_value' => $this->getSetting('placeholder'),
       '#description' => $this->t('Text that will be shown inside the field until a value is entered. This hint is usually a sample value or a brief description of the expected format.'),
     ];
+    $element['show_id'] = [
+      '#type' => 'checkbox',
+      '#title' => $this->t('Show Entity ID'),
+      '#default_value' => $this->getSetting('show_id') ?? TRUE,
+      '#description' => $this->t('Will display the entity id of the selection. When disabled, the entity id will still be shown for items with duplicate titles.'),
+    ];
     return $element;
   }
 
@@ -87,6 +94,8 @@ public function settingsSummary() {
       $summary[] = $this->t('No placeholder');
     }
 
+    $summary[] = $this->t('Show entity IDs: @show', ['@show' => $this->getSetting('match_operator') ? 'Yes' : 'No']);
+
     return $summary;
   }
 
@@ -120,8 +129,13 @@ public function formElement(FieldItemListInterface $items, $delta, array $elemen
       '#default_value' => $referenced_entities[$delta] ?? NULL,
       '#size' => $this->getSetting('size'),
       '#placeholder' => $this->getSetting('placeholder'),
+      '#show_id' => $this->getSetting('show_id'),
     ];
 
+    if (empty($this->getSetting('show_id'))) {
+      $element['#attributes']['data-drupal-autocomplete-hide-ids'] = '';
+    }
+
     if ($bundle = $this->getAutocreateBundle()) {
       $element['#autocreate'] = [
         'bundle' => $bundle,
diff --git a/core/misc/autocomplete.js b/core/misc/autocomplete.js
index 74ca14e33e..b6b6664188 100644
--- a/core/misc/autocomplete.js
+++ b/core/misc/autocomplete.js
@@ -120,7 +120,19 @@
           suggestions.splice(index, 1);
         }
       }
-      response(suggestions);
+
+      const labels = suggestions.map((item) => item.label);
+      const duplicates = new Set(
+        labels.filter(
+          (item) => labels.indexOf(item) !== labels.lastIndexOf(item),
+        ),
+      );
+
+      response(
+        suggestions.map((item) =>
+          duplicates.has(item.label) ? { ...item, showId: true } : item,
+        ),
+      );
     }
 
     // Get the desired term and construct the autocomplete URL for it.
@@ -177,7 +189,12 @@
     // Remove the current input.
     terms.pop();
     // Add the selected item.
-    terms.push(ui.item.value);
+    // @todo this should be dynamic based on the formatter show_id setting. Use
+    // the value property to display entity ids and use the label property to
+    // not display them.
+    const hideIds = this.hasAttribute('data-drupal-autocomplete-hide-ids');
+
+    terms.push(hideIds && !ui.item.showId ? ui.item.label : ui.item.value);
 
     event.target.value = terms.join(', ');
     // Return false to tell jQuery UI that we've filled in the value already.
@@ -196,7 +213,9 @@
    *   jQuery collection of the ul element.
    */
   function renderItem(ul, item) {
-    return $('<li>').append($('<a>').html(item.label)).appendTo(ul);
+    return $('<li>')
+      .append($('<a>').html(item.showId ? item.value : item.label))
+      .appendTo(ul);
   }
 
   /**
diff --git a/core/modules/jsonapi/tests/src/Functional/EntityFormDisplayTest.php b/core/modules/jsonapi/tests/src/Functional/EntityFormDisplayTest.php
index afaf28eaf9..e42e3e782c 100644
--- a/core/modules/jsonapi/tests/src/Functional/EntityFormDisplayTest.php
+++ b/core/modules/jsonapi/tests/src/Functional/EntityFormDisplayTest.php
@@ -148,6 +148,7 @@ protected function getExpectedDocument() {
                 'match_limit' => 10,
                 'size' => 60,
                 'placeholder' => '',
+                'show_id' => TRUE,
               ],
               'region' => 'content',
               'third_party_settings' => [],
diff --git a/core/modules/taxonomy/config/schema/taxonomy.views.schema.yml b/core/modules/taxonomy/config/schema/taxonomy.views.schema.yml
index 9ec9758185..d9c3ac5596 100644
--- a/core/modules/taxonomy/config/schema/taxonomy.views.schema.yml
+++ b/core/modules/taxonomy/config/schema/taxonomy.views.schema.yml
@@ -141,6 +141,9 @@ views.filter.taxonomy_index_tid:
       sequence:
         type: integer
         label: 'Value'
+      show_id:
+        type: boolean
+        label: 'Show ID'
 
 views.filter.taxonomy_index_tid_depth:
   type: views.filter.taxonomy_index_tid
diff --git a/core/modules/taxonomy/src/Plugin/views/filter/TaxonomyIndexTid.php b/core/modules/taxonomy/src/Plugin/views/filter/TaxonomyIndexTid.php
index d83a028edd..7050bf2942 100644
--- a/core/modules/taxonomy/src/Plugin/views/filter/TaxonomyIndexTid.php
+++ b/core/modules/taxonomy/src/Plugin/views/filter/TaxonomyIndexTid.php
@@ -176,10 +176,11 @@ protected function valueForm(&$form, FormStateInterface $form_state) {
 
     if ($this->options['type'] == 'textfield') {
       $terms = $this->value ? Term::loadMultiple(($this->value)) : [];
+      $show_id = !empty($this->options['show_id']);
       $form['value'] = [
         '#title' => $this->options['limit'] ? $this->t('Select terms from vocabulary @voc', ['@voc' => $vocabulary->label()]) : $this->t('Select terms'),
         '#type' => 'textfield',
-        '#default_value' => EntityAutocomplete::getEntityLabels($terms),
+        '#default_value' => EntityAutocomplete::getEntityLabels($terms, $show_id),
       ];
 
       if ($this->options['limit']) {
@@ -188,6 +189,9 @@ protected function valueForm(&$form, FormStateInterface $form_state) {
         $form['value']['#selection_settings']['target_bundles'] = [$vocabulary->id()];
         $form['value']['#tags'] = TRUE;
         $form['value']['#process_default_value'] = FALSE;
+        if (!$show_id) {
+          $form['value']['#attributes']['data-drupal-autocomplete-hide-ids'] = '';
+        }
       }
     }
     else {
diff --git a/core/modules/taxonomy/src/Plugin/views/filter/TaxonomyIndexTidDepth.php b/core/modules/taxonomy/src/Plugin/views/filter/TaxonomyIndexTidDepth.php
index bb2e318adc..2eeeef38dc 100644
--- a/core/modules/taxonomy/src/Plugin/views/filter/TaxonomyIndexTidDepth.php
+++ b/core/modules/taxonomy/src/Plugin/views/filter/TaxonomyIndexTidDepth.php
@@ -28,6 +28,7 @@ protected function defineOptions() {
     $options = parent::defineOptions();
 
     $options['depth'] = ['default' => 0];
+    $options['show_id'] = ['default' => TRUE];
 
     return $options;
   }
@@ -41,6 +42,13 @@ public function buildExtraOptionsForm(&$form, FormStateInterface $form_state) {
       '#default_value' => $this->options['depth'],
       '#description' => $this->t('The depth will match nodes tagged with terms in the hierarchy. For example, if you have the term "fruit" and a child term "apple", with a depth of 1 (or higher) then filtering for the term "fruit" will get nodes that are tagged with "apple" as well as "fruit". If negative, the reverse is true; searching for "apple" will also pick up nodes tagged with "fruit" if depth is -1 (or lower).'),
     ];
+
+    $form['show_id'] = [
+      '#type' => 'checkbox',
+      '#title' => $this->t('Show Entity ID'),
+      '#default_value' => $this->options['show_id'],
+      '#description' => $this->t('Will display the entity id of the selection. When disabled, the entity id will still be shown for items with duplicate titles.'),
+    ];
   }
 
   public function query() {
diff --git a/core/tests/Drupal/FunctionalTests/Rest/EntityFormDisplayResourceTestBase.php b/core/tests/Drupal/FunctionalTests/Rest/EntityFormDisplayResourceTestBase.php
index 65c925320e..7146dfdc70 100644
--- a/core/tests/Drupal/FunctionalTests/Rest/EntityFormDisplayResourceTestBase.php
+++ b/core/tests/Drupal/FunctionalTests/Rest/EntityFormDisplayResourceTestBase.php
@@ -112,6 +112,7 @@ protected function getExpectedNormalizedEntity() {
             'match_limit' => 10,
             'size' => 60,
             'placeholder' => '',
+            'show_id' => TRUE,
           ],
           'region' => 'content',
           'third_party_settings' => [],