diff --git a/editor/js/Sidebar.Geometry.js b/editor/js/Sidebar.Geometry.js
index 22fd1e6bc1dfc3..5cceae3db4a48c 100644
--- a/editor/js/Sidebar.Geometry.js
+++ b/editor/js/Sidebar.Geometry.js
@@ -1,6 +1,6 @@
 import * as THREE from 'three';
 
-import { UIPanel, UIRow, UIText, UIInput, UIButton, UISpan } from './libs/ui.js';
+import { UIPanel, UIRow, UIText, UIInput, UIButton, UISpan, UITextArea } from './libs/ui.js';
 
 import { SetGeometryValueCommand } from './commands/SetGeometryValueCommand.js';
 
@@ -145,6 +145,53 @@ function SidebarGeometry( editor ) {
 	geometryBoundingBoxRow.add( geometryBoundingBox );
 	container.add( geometryBoundingBoxRow );
 
+	// userData
+
+	const geometryUserDataRow = new UIRow();
+	const geometryUserData = new UITextArea().setValue( '{}' ).setWidth( '150px' ).setHeight( '40px' ).setFontSize( '12px' ).onChange( function () {
+
+		try {
+
+			const userData = JSON.parse( geometryUserData.getValue() );
+
+			if ( JSON.stringify( editor.selected.geometry.userData ) != JSON.stringify( userData ) ) {
+
+				editor.execute( new SetGeometryValueCommand( editor, editor.selected, 'userData', userData ) );
+
+				build();
+
+			}
+
+		} catch ( exception ) {
+
+			console.warn( exception );
+
+		}
+
+	} );
+	geometryUserData.onKeyUp( function () {
+
+		try {
+
+			JSON.parse( geometryUserData.getValue() );
+
+			geometryUserData.dom.classList.add( 'success' );
+			geometryUserData.dom.classList.remove( 'fail' );
+
+		} catch ( error ) {
+
+			geometryUserData.dom.classList.remove( 'success' );
+			geometryUserData.dom.classList.add( 'fail' );
+
+		}
+
+	} );
+
+	geometryUserDataRow.add( new UIText( strings.getKey( 'sidebar/geometry/userdata' ) ).setClass( 'Label' ) );
+	geometryUserDataRow.add( geometryUserData );
+
+	container.add( geometryUserDataRow );
+
 	// Helpers
 
 	const helpersRow = new UIRow().setMarginLeft( '120px' );
@@ -247,6 +294,8 @@ function SidebarGeometry( editor ) {
 
 			helpersRow.setDisplay( geometry.hasAttribute( 'normal' ) ? '' : 'none' );
 
+			geometryUserData.setValue( JSON.stringify( geometry.userData, null, '  ' ) );
+
 		} else {
 
 			container.setDisplay( 'none' );
diff --git a/editor/js/Strings.js b/editor/js/Strings.js
index 24ea679cc31091..e181ae5f2999ce 100644
--- a/editor/js/Strings.js
+++ b/editor/js/Strings.js
@@ -158,6 +158,7 @@ function Strings( config ) {
 			'sidebar/geometry/uuid': 'UUID',
 			'sidebar/geometry/name': 'Name',
 			'sidebar/geometry/bounds': 'Bounds',
+			'sidebar/geometry/userdata': 'User Data',
 			'sidebar/geometry/show_vertex_normals': 'Show Vertex Normals',
 			'sidebar/geometry/compute_vertex_normals': 'Compute Vertex Normals',
 			'sidebar/geometry/compute_vertex_tangents': 'Compute Tangents',
@@ -556,6 +557,7 @@ function Strings( config ) {
 			'sidebar/geometry/uuid': 'UUID',
 			'sidebar/geometry/name': 'Nom',
 			'sidebar/geometry/bounds': 'Limites',
+			'sidebar/geometry/userdata': 'Données utilisateur',
 			'sidebar/geometry/show_vertex_normals': 'Afficher normales',
 			'sidebar/geometry/compute_vertex_normals': 'Compute Vertex Normals',
 			'sidebar/geometry/compute_vertex_tangents': 'Compute Tangents',
@@ -954,6 +956,7 @@ function Strings( config ) {
 			'sidebar/geometry/uuid': '识别码',
 			'sidebar/geometry/name': '名称',
 			'sidebar/geometry/bounds': '界限',
+			'sidebar/geometry/userdata': '自定义数据',
 			'sidebar/geometry/show_vertex_normals': '显示顶点法线',
 			'sidebar/geometry/compute_vertex_normals': '计算顶点法线',
 			'sidebar/geometry/compute_vertex_tangents': 'Compute Tangents',
@@ -1352,6 +1355,7 @@ function Strings( config ) {
 			'sidebar/geometry/uuid': 'UUID',
 			'sidebar/geometry/name': '名前',
 			'sidebar/geometry/bounds': '境界',
+			'sidebar/geometry/userdata': 'ユーザーデータ',
 			'sidebar/geometry/show_vertex_normals': '頂点法線を表示',
 			'sidebar/geometry/compute_vertex_normals': '頂点法線を計算',
 			'sidebar/geometry/compute_vertex_tangents': '接線を計算',