diff --git a/docs/designers-developers/developers/data/data-core-blocks.md b/docs/designers-developers/developers/data/data-core-blocks.md
index 5256587043602..b1d377ed11a6f 100644
--- a/docs/designers-developers/developers/data/data-core-blocks.md
+++ b/docs/designers-developers/developers/data/data-core-blocks.md
@@ -108,6 +108,18 @@ _Returns_
 
 -   `?string`: Name of the block for handling non-block content.
 
+<a name="getGroupingBlockName" href="#getGroupingBlockName">#</a> **getGroupingBlockName**
+
+Returns the name of the block for handling unregistered blocks.
+
+_Parameters_
+
+-   _state_ `Object`: Data state.
+
+_Returns_
+
+-   `?string`: Name of the block for handling unregistered blocks.
+
 <a name="getUnregisteredFallbackBlockName" href="#getUnregisteredFallbackBlockName">#</a> **getUnregisteredFallbackBlockName**
 
 Returns the name of the block for handling unregistered blocks.
@@ -270,6 +282,20 @@ _Returns_
 
 -   `Object`: Action object.
 
+<a name="setGroupingBlockName" href="#setGroupingBlockName">#</a> **setGroupingBlockName**
+
+Returns an action object used to set the name of the block used
+when grouping other blocks
+eg: in "Group/Ungroup" interactions
+
+_Parameters_
+
+-   _name_ `string`: Block name.
+
+_Returns_
+
+-   `Object`: Action object.
+
 <a name="setUnregisteredFallbackBlockName" href="#setUnregisteredFallbackBlockName">#</a> **setUnregisteredFallbackBlockName**
 
 Returns an action object used to set the name of the block used as a fallback
diff --git a/packages/blocks/README.md b/packages/blocks/README.md
index b7a8e5fd70c9d..84c7dbba40f03 100644
--- a/packages/blocks/README.md
+++ b/packages/blocks/README.md
@@ -372,6 +372,15 @@ _Returns_
 
 -   `?string`: Blog name.
 
+<a name="getGroupingBlockName" href="#getGroupingBlockName">#</a> **getGroupingBlockName**
+
+Retrieves name of block used for handling grouping interactions, or undefined if no
+handler has been defined.
+
+_Returns_
+
+-   `?string`: Blog name.
+
 <a name="getPhrasingContentSchema" href="#getPhrasingContentSchema">#</a> **getPhrasingContentSchema**
 
 Get schema of possible paths for phrasing content.
@@ -668,6 +677,14 @@ _Parameters_
 
 -   _blockName_ `string`: Block name.
 
+<a name="setGroupingBlockName" href="#setGroupingBlockName">#</a> **setGroupingBlockName**
+
+Assigns the name of the block used in grouping interactions.
+
+_Parameters_
+
+-   _name_ `string`: Block name.
+
 <a name="switchToBlockType" href="#switchToBlockType">#</a> **switchToBlockType**
 
 Switch one or more blocks into one or more blocks of the new block type.
diff --git a/packages/blocks/src/api/index.js b/packages/blocks/src/api/index.js
index c13b28f4903ca..68e60ed43952b 100644
--- a/packages/blocks/src/api/index.js
+++ b/packages/blocks/src/api/index.js
@@ -35,6 +35,8 @@ export {
 	getUnregisteredTypeHandlerName,
 	setDefaultBlockName,
 	getDefaultBlockName,
+	setGroupingBlockName,
+	getGroupingBlockName,
 	getBlockType,
 	getBlockTypes,
 	getBlockSupport,
diff --git a/packages/blocks/src/api/registration.js b/packages/blocks/src/api/registration.js
index 8f1155fbce340..c04a909546d2a 100644
--- a/packages/blocks/src/api/registration.js
+++ b/packages/blocks/src/api/registration.js
@@ -199,6 +199,15 @@ export function getFreeformContentHandlerName() {
 	return select( 'core/blocks' ).getFreeformFallbackBlockName();
 }
 
+/**
+ * Retrieves name of block used for handling grouping interactions
+ *
+ * @return {?string} Blog name.
+ */
+export function getGroupingBlockName() {
+	return select( 'core/blocks' ).getGroupingBlockName();
+}
+
 /**
  * Assigns name of block handling unregistered block types.
  *
@@ -227,6 +236,15 @@ export function setDefaultBlockName( name ) {
 	dispatch( 'core/blocks' ).setDefaultBlockName( name );
 }
 
+/**
+ * Assigns the grouping block name.
+ *
+ * @param {string} name Block name.
+ */
+export function setGroupingBlockName( name ) {
+	dispatch( 'core/blocks' ).setGroupingBlockName( name );
+}
+
 /**
  * Retrieves the default block name.
  *
diff --git a/packages/blocks/src/store/actions.js b/packages/blocks/src/store/actions.js
index 8f2d9c834d26d..220ae9be0ea0d 100644
--- a/packages/blocks/src/store/actions.js
+++ b/packages/blocks/src/store/actions.js
@@ -107,6 +107,22 @@ export function setUnregisteredFallbackBlockName( name ) {
 	};
 }
 
+/**
+ * Returns an action object used to set the name of the block used
+ * when grouping other blocks
+ * eg: in "Group/Ungroup" interactions
+ *
+ * @param {string} name Block name.
+ *
+ * @return {Object} Action object.
+ */
+export function setGroupingBlockName( name ) {
+	return {
+		type: 'SET_GROUPING_BLOCK_NAME',
+		name,
+	};
+}
+
 /**
  * Returns an action object used to set block categories.
  *
diff --git a/packages/blocks/src/store/reducer.js b/packages/blocks/src/store/reducer.js
index bfeeec10ec1e1..4e3131ca7b62e 100644
--- a/packages/blocks/src/store/reducer.js
+++ b/packages/blocks/src/store/reducer.js
@@ -124,6 +124,7 @@ export function createBlockNameSetterReducer( setActionType ) {
 export const defaultBlockName = createBlockNameSetterReducer( 'SET_DEFAULT_BLOCK_NAME' );
 export const freeformFallbackBlockName = createBlockNameSetterReducer( 'SET_FREEFORM_FALLBACK_BLOCK_NAME' );
 export const unregisteredFallbackBlockName = createBlockNameSetterReducer( 'SET_UNREGISTERED_FALLBACK_BLOCK_NAME' );
+export const groupingBlockName = createBlockNameSetterReducer( 'SET_GROUPING_BLOCK_NAME' );
 
 /**
  * Reducer managing the categories
@@ -164,5 +165,6 @@ export default combineReducers( {
 	defaultBlockName,
 	freeformFallbackBlockName,
 	unregisteredFallbackBlockName,
+	groupingBlockName,
 	categories,
 } );
diff --git a/packages/blocks/src/store/selectors.js b/packages/blocks/src/store/selectors.js
index 97d323c65fb16..25fe40ca9f611 100644
--- a/packages/blocks/src/store/selectors.js
+++ b/packages/blocks/src/store/selectors.js
@@ -101,6 +101,17 @@ export function getUnregisteredFallbackBlockName( state ) {
 	return state.unregisteredFallbackBlockName;
 }
 
+/**
+ * Returns the name of the block for handling unregistered blocks.
+ *
+ * @param {Object} state Data state.
+ *
+ * @return {string?} Name of the block for handling unregistered blocks.
+ */
+export function getGroupingBlockName( state ) {
+	return state.groupingBlockName;
+}
+
 /**
  * Returns an array with the child blocks of a given block.
  *