diff --git a/mediapipe/tasks/web/components/containers/BUILD b/mediapipe/tasks/web/components/containers/BUILD
index a0db59d0b..0126e83c9 100644
--- a/mediapipe/tasks/web/components/containers/BUILD
+++ b/mediapipe/tasks/web/components/containers/BUILD
@@ -15,6 +15,11 @@ mediapipe_ts_declaration(
     deps = [":category"],
 )
 
+mediapipe_ts_declaration(
+    name = "keypoint",
+    srcs = ["keypoint.d.ts"],
+)
+
 mediapipe_ts_declaration(
     name = "landmark",
     srcs = ["landmark.d.ts"],
diff --git a/mediapipe/tasks/web/components/containers/keypoint.d.ts b/mediapipe/tasks/web/components/containers/keypoint.d.ts
new file mode 100644
index 000000000..3aaf9eb06
--- /dev/null
+++ b/mediapipe/tasks/web/components/containers/keypoint.d.ts
@@ -0,0 +1,33 @@
+/**
+ * Copyright 2023 The MediaPipe Authors. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * A keypoint, defined by the coordinates (x, y), normalized by the image
+ * dimensions.
+ */
+export declare interface NormalizedKeypoint {
+  /** X in normalized image coordinates. */
+  x: number;
+
+  /** Y in normalized image coordinates. */
+  y: number;
+
+  /** Optional label of the keypoint. */
+  label?: string;
+
+  /** Optional score of the keypoint. */
+  score?: number;
+}
diff --git a/mediapipe/tasks/web/vision/core/BUILD b/mediapipe/tasks/web/vision/core/BUILD
index 5135feecc..cd2954eb3 100644
--- a/mediapipe/tasks/web/vision/core/BUILD
+++ b/mediapipe/tasks/web/vision/core/BUILD
@@ -24,6 +24,9 @@ mediapipe_ts_declaration(
 mediapipe_ts_declaration(
     name = "types",
     srcs = ["types.d.ts"],
+    deps = [
+        "//mediapipe/tasks/web/components/containers:keypoint",
+    ],
 )
 
 mediapipe_ts_library(
diff --git a/mediapipe/tasks/web/vision/core/types.d.ts b/mediapipe/tasks/web/vision/core/types.d.ts
index aaa3e2f78..b88683aae 100644
--- a/mediapipe/tasks/web/vision/core/types.d.ts
+++ b/mediapipe/tasks/web/vision/core/types.d.ts
@@ -14,6 +14,8 @@
  * limitations under the License.
  */
 
+import {NormalizedKeypoint} from '../../../../tasks/web/components/containers/keypoint';
+
 /**
  * The segmentation tasks return the segmentation result as a Uint8Array
  * (when the default mode of `CATEGORY_MASK` is used) or as a Float32Array (for
@@ -32,3 +34,9 @@ export type SegmentationMask = Uint8Array|Float32Array|WebGLTexture;
  */
 export type SegmentationMaskCallback =
     (masks: SegmentationMask[], width: number, height: number) => void;
+
+/** A Region-Of-Interest (ROI) to represent a region within an image. */
+export declare interface RegionOfInterest {
+  /** The ROI in keypoint format. */
+  keypoint: NormalizedKeypoint;
+}