diff --git a/cli/tests/unit_node/process_test.ts b/cli/tests/unit_node/process_test.ts
index 23bf738649ba84..21f873260e14b8 100644
--- a/cli/tests/unit_node/process_test.ts
+++ b/cli/tests/unit_node/process_test.ts
@@ -121,6 +121,14 @@ Deno.test({
   },
 });
 
+Deno.test({
+  name: "process.ppid",
+  fn() {
+    assertEquals(typeof process.ppid, "number");
+    assertEquals(process.ppid, Deno.ppid);
+  },
+});
+
 Deno.test({
   name: "process.on",
   async fn() {
diff --git a/ext/node/polyfills/process.ts b/ext/node/polyfills/process.ts
index 312b8e845e5602..20399bdf90311f 100644
--- a/ext/node/polyfills/process.ts
+++ b/ext/node/polyfills/process.ts
@@ -558,6 +558,11 @@ class Process extends EventEmitter {
     return pid;
   }
 
+  /** https://nodejs.org/api/process.html#processppid */
+  get ppid() {
+    return Deno.ppid;
+  }
+
   /** https://nodejs.org/api/process.html#process_process_platform */
   get platform() {
     if (!platform) {