diff --git a/doc/api/process.md b/doc/api/process.md
index 2ba2794cff..8fb0e38834 100644
--- a/doc/api/process.md
+++ b/doc/api/process.md
@@ -3379,7 +3379,7 @@ any exit or close events and without running any cleanup handler.
 
 This function will never return, unless an error occurred.
 
-This function is not available on Windows.
+This function is not available on Windows or IBM i.
 
 ## `process.report`
 
diff --git a/lib/internal/process/per_thread.js b/lib/internal/process/per_thread.js
index 335b886830..36ac1046da 100644
--- a/lib/internal/process/per_thread.js
+++ b/lib/internal/process/per_thread.js
@@ -286,7 +286,7 @@ function wrapProcessMethods(binding) {
 
     if (!isMainThread) {
       throw new ERR_WORKER_UNSUPPORTED_OPERATION('Calling process.execve');
-    } else if (process.platform === 'win32') {
+    } else if (process.platform === 'win32' || process.platform === 'os400') {
       throw new ERR_FEATURE_UNAVAILABLE_ON_PLATFORM('process.execve');
     }
 
diff --git a/src/node_process_methods.cc b/src/node_process_methods.cc
index 5c3505f25a..9dd936c8ba 100644
--- a/src/node_process_methods.cc
+++ b/src/node_process_methods.cc
@@ -501,7 +501,7 @@ static void ReallyExit(const FunctionCallbackInfo<Value>& args) {
   env->Exit(code);
 }
 
-#ifdef __POSIX__
+#if defined __POSIX__ && !defined(__PASE__)
 inline int persist_standard_stream(int fd) {
   int flags = fcntl(fd, F_GETFD, 0);
 
@@ -783,7 +783,7 @@ static void CreatePerIsolateProperties(IsolateData* isolate_data,
   SetMethod(isolate, target, "dlopen", binding::DLOpen);
   SetMethod(isolate, target, "reallyExit", ReallyExit);
 
-#ifdef __POSIX__
+#if defined __POSIX__ && !defined(__PASE__)
   SetMethod(isolate, target, "execve", Execve);
 #endif
   SetMethodNoSideEffect(isolate, target, "uptime", Uptime);
@@ -830,7 +830,7 @@ void RegisterExternalReferences(ExternalReferenceRegistry* registry) {
   registry->Register(binding::DLOpen);
   registry->Register(ReallyExit);
 
-#ifdef __POSIX__
+#if defined __POSIX__ && !defined(__PASE__)
   registry->Register(Execve);
 #endif
   registry->Register(Uptime);
diff --git a/test/parallel/test-process-execve-abort.js b/test/parallel/test-process-execve-abort.js
index 515e1c1f8f..4a36944ac8 100644
--- a/test/parallel/test-process-execve-abort.js
+++ b/test/parallel/test-process-execve-abort.js
@@ -1,14 +1,14 @@
 'use strict';
 
-const { skip, isWindows } = require('../common');
+const { skip, isWindows, isIBMi } = require('../common');
 const { ok } = require('assert');
 const { spawnSync } = require('child_process');
 const { isMainThread } = require('worker_threads');
 
 if (!isMainThread) {
   skip('process.execve is not available in Workers');
-} else if (isWindows) {
-  skip('process.execve is not available in Windows');
+} else if (isWindows || isIBMi) {
+  skip('process.execve is not available in Windows or IBM i');
 }
 
 if (process.argv[2] === 'child') {
diff --git a/test/parallel/test-process-execve-on-exit.js b/test/parallel/test-process-execve-on-exit.js
index e6859b51fe..ff01b0b50e 100644
--- a/test/parallel/test-process-execve-on-exit.js
+++ b/test/parallel/test-process-execve-on-exit.js
@@ -1,13 +1,13 @@
 'use strict';
 
-const { mustNotCall, skip, isWindows } = require('../common');
+const { mustNotCall, skip, isWindows, isIBMi } = require('../common');
 const { strictEqual } = require('assert');
 const { isMainThread } = require('worker_threads');
 
 if (!isMainThread) {
   skip('process.execve is not available in Workers');
-} else if (isWindows) {
-  skip('process.execve is not available in Windows');
+} else if (isWindows || isIBMi) {
+  skip('process.execve is not available in Windows or IBM i');
 }
 
 if (process.argv[2] === 'replaced') {
diff --git a/test/parallel/test-process-execve-permission-fail.js b/test/parallel/test-process-execve-permission-fail.js
index 0398552edd..f1fceca270 100644
--- a/test/parallel/test-process-execve-permission-fail.js
+++ b/test/parallel/test-process-execve-permission-fail.js
@@ -2,14 +2,14 @@
 
 'use strict';
 
-const { mustCall, skip, isWindows } = require('../common');
+const { mustCall, skip, isWindows, isIBMi } = require('../common');
 const { fail, throws } = require('assert');
 const { isMainThread } = require('worker_threads');
 
 if (!isMainThread) {
   skip('process.execve is not available in Workers');
-} else if (isWindows) {
-  skip('process.execve is not available in Windows');
+} else if (isWindows || isIBMi) {
+  skip('process.execve is not available in Windows or IBM i');
 }
 
 if (process.argv[2] === 'replaced') {
diff --git a/test/parallel/test-process-execve-permission-granted.js b/test/parallel/test-process-execve-permission-granted.js
index 3521b240f0..f4d36d83f0 100644
--- a/test/parallel/test-process-execve-permission-granted.js
+++ b/test/parallel/test-process-execve-permission-granted.js
@@ -2,14 +2,14 @@
 
 'use strict';
 
-const { skip, isWindows } = require('../common');
+const { skip, isWindows, isIBMi } = require('../common');
 const { deepStrictEqual } = require('assert');
 const { isMainThread } = require('worker_threads');
 
 if (!isMainThread) {
   skip('process.execve is not available in Workers');
-} else if (isWindows) {
-  skip('process.execve is not available in Windows');
+} else if (isWindows || isIBMi) {
+  skip('process.execve is not available in Windows or IBM i');
 }
 
 if (process.argv[2] === 'replaced') {
diff --git a/test/parallel/test-process-execve-socket.js b/test/parallel/test-process-execve-socket.js
index 9d85f7ce2b..d113f690a0 100644
--- a/test/parallel/test-process-execve-socket.js
+++ b/test/parallel/test-process-execve-socket.js
@@ -1,14 +1,14 @@
 'use strict';
 
-const { mustCall, mustNotCall, skip, isWindows } = require('../common');
+const { mustCall, mustNotCall, skip, isWindows, isIBMi } = require('../common');
 const { fail, ok } = require('assert');
 const { createServer } = require('net');
 const { isMainThread } = require('worker_threads');
 
 if (!isMainThread) {
   skip('process.execve is not available in Workers');
-} else if (isWindows) {
-  skip('process.execve is not available in Windows');
+} else if (isWindows || isIBMi) {
+  skip('process.execve is not available in Windows or IBM i');
 }
 
 if (process.argv[2] === 'replaced') {
diff --git a/test/parallel/test-process-execve-validation.js b/test/parallel/test-process-execve-validation.js
index 339d53d573..febaa12d06 100644
--- a/test/parallel/test-process-execve-validation.js
+++ b/test/parallel/test-process-execve-validation.js
@@ -1,6 +1,6 @@
 'use strict';
 
-const { skip, isWindows } = require('../common');
+const { skip, isWindows, isIBMi } = require('../common');
 const { throws } = require('assert');
 const { isMainThread } = require('worker_threads');
 
@@ -8,7 +8,7 @@ if (!isMainThread) {
   skip('process.execve is not available in Workers');
 }
 
-if (!isWindows) {
+if (!isWindows && !isIBMi) {
   // Invalid path name
   {
     throws(() => {
diff --git a/test/parallel/test-process-execve-worker-threads.js b/test/parallel/test-process-execve-worker-threads.js
index 5b93f45bbe..551f6f7ac3 100644
--- a/test/parallel/test-process-execve-worker-threads.js
+++ b/test/parallel/test-process-execve-worker-threads.js
@@ -1,11 +1,11 @@
 'use strict';
 
-const { isWindows, mustCall, skip } = require('../common');
+const { isWindows, isIBMi, mustCall, skip } = require('../common');
 const { throws } = require('assert');
 const { isMainThread, Worker } = require('worker_threads');
 
-if (isWindows) {
-  skip('process.execve is not available in Windows');
+if (isWindows || isIBMi) {
+  skip('process.execve is not available in Windows or IBM i');
 }
 
 if (isMainThread) {
diff --git a/test/parallel/test-process-execve.js b/test/parallel/test-process-execve.js
index 1cc9bf8701..b0d4bc0515 100644
--- a/test/parallel/test-process-execve.js
+++ b/test/parallel/test-process-execve.js
@@ -1,13 +1,13 @@
 'use strict';
 
-const { isWindows, skip } = require('../common');
+const { isWindows, isIBMi, skip } = require('../common');
 const { deepStrictEqual, fail, strictEqual } = require('assert');
 const { isMainThread } = require('worker_threads');
 
 if (!isMainThread) {
   skip('process.execve is not available in Workers');
-} else if (isWindows) {
-  skip('process.execve is not available in Windows');
+} else if (isWindows || isIBMi) {
+  skip('process.execve is not available in Windows or IBM i');
 }
 
 if (process.argv[2] === 'replaced') {