diff --git a/src/resources/groups.ts b/src/resources/groups.ts
index e627d516..d5ece8e1 100644
--- a/src/resources/groups.ts
+++ b/src/resources/groups.ts
@@ -50,6 +50,22 @@ export class Groups extends Resource<{realm?: string}> {
     urlParamKeys: ['id'],
   });
 
+  /**
+   * Set or create child.
+   * This will just set the parent if it exists. Create it and set the parent if the group doesn’t exist.
+   */
+
+  public setOrCreateChild = this.makeUpdateRequest<
+    {id: string},
+    GroupRepresentation,
+    {id: string}
+  >({
+    method: 'POST',
+    path: '/{id}/children',
+    urlParamKeys: ['id'],
+    returnResourceIdInLocationHeader: {field: 'id'},
+  });
+
   /**
    * Members
    */
diff --git a/test/groups.spec.ts b/test/groups.spec.ts
index d3cbd528..71a012a6 100644
--- a/test/groups.spec.ts
+++ b/test/groups.spec.ts
@@ -72,6 +72,26 @@ describe('Groups', function() {
     });
   });
 
+  it('set or create child', async () => {
+    const groupName = 'child-group';
+    const groupId = this.currentGroup.id;
+    const childGroup = await this.kcAdminClient.groups.setOrCreateChild(
+      {id: groupId},
+      {name: groupName},
+    );
+
+    expect(childGroup.id).to.be.ok;
+
+    const group = await this.kcAdminClient.groups.findOne({
+      id: groupId,
+    });
+    expect(group.subGroups[0]).to.deep.include({
+      id: childGroup.id,
+      name: groupName,
+      path: `/${group.name}/${groupName}`,
+    });
+  });
+
   /**
    * Role mappings
    */