diff --git a/src/object-graph.ts b/src/object-graph.ts
index c3441e4..f335df6 100644
--- a/src/object-graph.ts
+++ b/src/object-graph.ts
@@ -22,6 +22,14 @@ export class ObjectGraph<NodeValue extends Record<string, unknown>> {
     }
   }
 
+  /**
+   * @description Returns the keys of the object graph.
+   * @since 0.1.0
+   */
+  public keys() {
+    return this.nodes.keys();
+  }
+
   /**
    * @description Returns the length of the object graph.
    * @since 0.1.0
diff --git a/tests/object-graph.test.ts b/tests/object-graph.test.ts
index 622d564..d6a25bd 100644
--- a/tests/object-graph.test.ts
+++ b/tests/object-graph.test.ts
@@ -9,6 +9,14 @@ import {
   type Size,
 } from "../mocks/object-graph.mock";
 
+describe("keys", () => {
+  test("get the keys of the object graph", () => {
+    const shirtsObjectGraph = new ObjectGraph<Shirt>(shirtsMock, (shirt) => shirt.sku);
+
+    expect(Array.from(shirtsObjectGraph.keys())).toEqual(["1", "2", "3", "4", "5", "6", "7", "8"]);
+  });
+});
+
 describe("length", () => {
   test("get the length of the object graph", () => {
     const shirtToAdd: Shirt = { sku: "9", color: "orange", size: "small" };