diff --git a/modules/shs_select2/config/schema/shs_select2.schema.yml b/modules/shs_select2/config/schema/shs_select2.schema.yml
new file mode 100644
index 0000000..b20be07
--- /dev/null
+++ b/modules/shs_select2/config/schema/shs_select2.schema.yml
@@ -0,0 +1,5 @@
+# Schema for configuration files of the SHS select2 module.
+
+field.widget.settings.options_shs_select2:
+  type: field.widget.settings.options_shs
+  label: 'Simple hierarchical select with select2 form display settings'
diff --git a/modules/shs_select2/js/views/Select2WidgetView.js b/modules/shs_select2/js/views/Select2WidgetView.js
new file mode 100644
index 0000000..0b938e0
--- /dev/null
+++ b/modules/shs_select2/js/views/Select2WidgetView.js
@@ -0,0 +1,32 @@
+/**
+ * @file
+ * A Backbone view for a shs widget optionally rendered as select2 element.
+ */
+
+(function ($, Drupal, drupalSettings, Backbone) {
+  'use strict';
+
+  Drupal.shs_select2 = Drupal.shs_select2 || {};
+
+  Drupal.shs_select2.Select2WidgetView = Drupal.shs.WidgetView.extend({
+
+    /**
+     * @inheritdoc
+     */
+    render: function () {
+      var widget = Drupal.shs.WidgetView.prototype.render.apply(this);
+
+      widget.$el
+        .addClass('select2-widget')
+        // @todo Applying configuration here won't work for e.g. placeholder
+        //    (it's ignored by select2 for some reason.). Also these
+        //    configuration options may be configurable in field settings.
+        .attr('data-select2-config', "{\"width\":\"100%\", \"minimumResultsForSearch\": 0}");
+
+      Drupal.behaviors.select2.attach(widget.container.$el.get(0));
+
+      return widget;
+    }
+  });
+
+}(jQuery, Drupal, drupalSettings, Backbone));
diff --git a/modules/shs_select2/shs_select2.info.yml b/modules/shs_select2/shs_select2.info.yml
new file mode 100644
index 0000000..dc1befa
--- /dev/null
+++ b/modules/shs_select2/shs_select2.info.yml
@@ -0,0 +1,8 @@
+name: 'Simple hierarchical select: Select2'
+description: 'Integrates Select2 with Simple hierarchical select.'
+package: User interface
+type: module
+core_version_requirement: ^8.8 || ^9 || ^10
+dependencies:
+  - select2:select2
+  - shs:shs
diff --git a/modules/shs_select2/shs_select2.libraries.yml b/modules/shs_select2/shs_select2.libraries.yml
new file mode 100644
index 0000000..f47515f
--- /dev/null
+++ b/modules/shs_select2/shs_select2.libraries.yml
@@ -0,0 +1,7 @@
+shs_select2.form:
+  version: VERSION
+  js:
+    js/views/Select2WidgetView.js: {}
+  dependencies:
+    - shs/shs.form
+    - select2/select2
diff --git a/modules/shs_select2/shs_select2.module b/modules/shs_select2/shs_select2.module
new file mode 100644
index 0000000..4e57737
--- /dev/null
+++ b/modules/shs_select2/shs_select2.module
@@ -0,0 +1,14 @@
+<?php
+
+/**
+ * @file
+ * Integrates Select2 with Simple hierarchical select.
+ */
+
+/**
+ * Implements hook_shs_class_definitions_alter().
+ */
+function shs_select2_shs_class_definitions_alter(&$definitions, $context) {
+  // Use custom classes for widget.
+  $definitions['views']['widget'] = 'Drupal.shs_select2.Select2WidgetView';
+}
diff --git a/modules/shs_select2/src/Plugin/Field/FieldWidget/OptionsShsSelect2Widget.php b/modules/shs_select2/src/Plugin/Field/FieldWidget/OptionsShsSelect2Widget.php
new file mode 100644
index 0000000..bb2611f
--- /dev/null
+++ b/modules/shs_select2/src/Plugin/Field/FieldWidget/OptionsShsSelect2Widget.php
@@ -0,0 +1,33 @@
+<?php
+
+namespace Drupal\shs_select2\Plugin\Field\FieldWidget;
+
+use Drupal\Core\Field\FieldItemListInterface;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\shs\Plugin\Field\FieldWidget\OptionsShsWidget;
+
+/**
+ * Plugin implementation of the 'options_shs_select2' widget.
+ *
+ * @FieldWidget(
+ *   id = "options_shs_select2",
+ *   label = @Translation("Simple hierarchical select: Select2"),
+ *   field_types = {
+ *     "entity_reference"
+ *   },
+ *   multiple_values = TRUE
+ * )
+ */
+class OptionsShsSelect2Widget extends OptionsShsWidget {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function formElement(FieldItemListInterface $items, $delta, array $element, array &$form, FormStateInterface $form_state) {
+    $element = parent::formElement($items, $delta, $element, $form, $form_state);
+    $element['#attached']['library'][] = 'shs_select2/shs_select2.form';
+
+    return $element;
+  }
+
+}