diff --git a/.cspell.dict/cpython.txt b/.cspell.dict/cpython.txt
index cb6f774ed18..5011975f496 100644
--- a/.cspell.dict/cpython.txt
+++ b/.cspell.dict/cpython.txt
@@ -36,8 +36,10 @@ kwonlyarg
 kwonlyargs
 lasti
 linearise
+lsprof
 maxdepth
 mult
+multibytecodec
 nkwargs
 noraise
 numer
@@ -49,6 +51,8 @@ posonlyarg
 posonlyargs
 prec
 preinitialized
+pydecimal
+pyrepl
 pythonw
 PYTHREAD_NAME
 releasebuffer
diff --git a/Lib/test/test_sys.py b/Lib/test/test_sys.py
index 1ce2e9fc0fe..6ae3eaee74b 100644
--- a/Lib/test/test_sys.py
+++ b/Lib/test/test_sys.py
@@ -1124,8 +1124,6 @@ def test_orig_argv(self):
         self.assertEqual(proc.stdout.rstrip().splitlines(), expected,
                          proc)
 
-    # TODO: RUSTPYTHON, AttributeError: module 'sys' has no attribute 'stdlib_module_names'
-    @unittest.expectedFailure
     def test_module_names(self):
         self.assertIsInstance(sys.stdlib_module_names, frozenset)
         for name in sys.stdlib_module_names:
diff --git a/crates/vm/src/builtins/frame.rs b/crates/vm/src/builtins/frame.rs
index 6ccc594d338..3712b04e875 100644
--- a/crates/vm/src/builtins/frame.rs
+++ b/crates/vm/src/builtins/frame.rs
@@ -41,6 +41,11 @@ impl Frame {
         self.globals.clone()
     }
 
+    #[pygetset]
+    fn f_builtins(&self) -> PyDictRef {
+        self.builtins.clone()
+    }
+
     #[pygetset]
     fn f_locals(&self, vm: &VirtualMachine) -> PyResult {
         self.locals(vm).map(Into::into)
diff --git a/crates/vm/src/stdlib/sys.rs b/crates/vm/src/stdlib/sys.rs
index 0e46ec18a01..92b15878b46 100644
--- a/crates/vm/src/stdlib/sys.rs
+++ b/crates/vm/src/stdlib/sys.rs
@@ -9,7 +9,8 @@ mod sys {
     use crate::{
         AsObject, PyObject, PyObjectRef, PyRef, PyRefExact, PyResult,
         builtins::{
-            PyBaseExceptionRef, PyDictRef, PyNamespace, PyStr, PyStrRef, PyTupleRef, PyTypeRef,
+            PyBaseExceptionRef, PyDictRef, PyFrozenSet, PyNamespace, PyStr, PyStrRef, PyTupleRef,
+            PyTypeRef,
         },
         common::{
             ascii,
@@ -148,6 +149,310 @@ mod sys {
         )
     }
 
+    // List from cpython/Python/stdlib_module_names.h
+    const STDLIB_MODULE_NAMES: &[&str] = &[
+        "__future__",
+        "_abc",
+        "_aix_support",
+        "_android_support",
+        "_apple_support",
+        "_ast",
+        "_asyncio",
+        "_bisect",
+        "_blake2",
+        "_bz2",
+        "_codecs",
+        "_codecs_cn",
+        "_codecs_hk",
+        "_codecs_iso2022",
+        "_codecs_jp",
+        "_codecs_kr",
+        "_codecs_tw",
+        "_collections",
+        "_collections_abc",
+        "_colorize",
+        "_compat_pickle",
+        "_compression",
+        "_contextvars",
+        "_csv",
+        "_ctypes",
+        "_curses",
+        "_curses_panel",
+        "_datetime",
+        "_dbm",
+        "_decimal",
+        "_elementtree",
+        "_frozen_importlib",
+        "_frozen_importlib_external",
+        "_functools",
+        "_gdbm",
+        "_hashlib",
+        "_heapq",
+        "_imp",
+        "_interpchannels",
+        "_interpqueues",
+        "_interpreters",
+        "_io",
+        "_ios_support",
+        "_json",
+        "_locale",
+        "_lsprof",
+        "_lzma",
+        "_markupbase",
+        "_md5",
+        "_multibytecodec",
+        "_multiprocessing",
+        "_opcode",
+        "_opcode_metadata",
+        "_operator",
+        "_osx_support",
+        "_overlapped",
+        "_pickle",
+        "_posixshmem",
+        "_posixsubprocess",
+        "_py_abc",
+        "_pydatetime",
+        "_pydecimal",
+        "_pyio",
+        "_pylong",
+        "_pyrepl",
+        "_queue",
+        "_random",
+        "_scproxy",
+        "_sha1",
+        "_sha2",
+        "_sha3",
+        "_signal",
+        "_sitebuiltins",
+        "_socket",
+        "_sqlite3",
+        "_sre",
+        "_ssl",
+        "_stat",
+        "_statistics",
+        "_string",
+        "_strptime",
+        "_struct",
+        "_suggestions",
+        "_symtable",
+        "_sysconfig",
+        "_thread",
+        "_threading_local",
+        "_tkinter",
+        "_tokenize",
+        "_tracemalloc",
+        "_typing",
+        "_uuid",
+        "_warnings",
+        "_weakref",
+        "_weakrefset",
+        "_winapi",
+        "_wmi",
+        "_zoneinfo",
+        "abc",
+        "antigravity",
+        "argparse",
+        "array",
+        "ast",
+        "asyncio",
+        "atexit",
+        "base64",
+        "bdb",
+        "binascii",
+        "bisect",
+        "builtins",
+        "bz2",
+        "cProfile",
+        "calendar",
+        "cmath",
+        "cmd",
+        "code",
+        "codecs",
+        "codeop",
+        "collections",
+        "colorsys",
+        "compileall",
+        "concurrent",
+        "configparser",
+        "contextlib",
+        "contextvars",
+        "copy",
+        "copyreg",
+        "csv",
+        "ctypes",
+        "curses",
+        "dataclasses",
+        "datetime",
+        "dbm",
+        "decimal",
+        "difflib",
+        "dis",
+        "doctest",
+        "email",
+        "encodings",
+        "ensurepip",
+        "enum",
+        "errno",
+        "faulthandler",
+        "fcntl",
+        "filecmp",
+        "fileinput",
+        "fnmatch",
+        "fractions",
+        "ftplib",
+        "functools",
+        "gc",
+        "genericpath",
+        "getopt",
+        "getpass",
+        "gettext",
+        "glob",
+        "graphlib",
+        "grp",
+        "gzip",
+        "hashlib",
+        "heapq",
+        "hmac",
+        "html",
+        "http",
+        "idlelib",
+        "imaplib",
+        "importlib",
+        "inspect",
+        "io",
+        "ipaddress",
+        "itertools",
+        "json",
+        "keyword",
+        "linecache",
+        "locale",
+        "logging",
+        "lzma",
+        "mailbox",
+        "marshal",
+        "math",
+        "mimetypes",
+        "mmap",
+        "modulefinder",
+        "msvcrt",
+        "multiprocessing",
+        "netrc",
+        "nt",
+        "ntpath",
+        "nturl2path",
+        "numbers",
+        "opcode",
+        "operator",
+        "optparse",
+        "os",
+        "pathlib",
+        "pdb",
+        "pickle",
+        "pickletools",
+        "pkgutil",
+        "platform",
+        "plistlib",
+        "poplib",
+        "posix",
+        "posixpath",
+        "pprint",
+        "profile",
+        "pstats",
+        "pty",
+        "pwd",
+        "py_compile",
+        "pyclbr",
+        "pydoc",
+        "pydoc_data",
+        "pyexpat",
+        "queue",
+        "quopri",
+        "random",
+        "re",
+        "readline",
+        "reprlib",
+        "resource",
+        "rlcompleter",
+        "runpy",
+        "sched",
+        "secrets",
+        "select",
+        "selectors",
+        "shelve",
+        "shlex",
+        "shutil",
+        "signal",
+        "site",
+        "smtplib",
+        "socket",
+        "socketserver",
+        "sqlite3",
+        "sre_compile",
+        "sre_constants",
+        "sre_parse",
+        "ssl",
+        "stat",
+        "statistics",
+        "string",
+        "stringprep",
+        "struct",
+        "subprocess",
+        "symtable",
+        "sys",
+        "sysconfig",
+        "syslog",
+        "tabnanny",
+        "tarfile",
+        "tempfile",
+        "termios",
+        "textwrap",
+        "this",
+        "threading",
+        "time",
+        "timeit",
+        "tkinter",
+        "token",
+        "tokenize",
+        "tomllib",
+        "trace",
+        "traceback",
+        "tracemalloc",
+        "tty",
+        "turtle",
+        "turtledemo",
+        "types",
+        "typing",
+        "unicodedata",
+        "unittest",
+        "urllib",
+        "uuid",
+        "venv",
+        "warnings",
+        "wave",
+        "weakref",
+        "webbrowser",
+        "winreg",
+        "winsound",
+        "wsgiref",
+        "xml",
+        "xmlrpc",
+        "zipapp",
+        "zipfile",
+        "zipimport",
+        "zlib",
+        "zoneinfo",
+    ];
+
+    #[pyattr(once)]
+    fn stdlib_module_names(vm: &VirtualMachine) -> PyObjectRef {
+        let names = STDLIB_MODULE_NAMES
+            .iter()
+            .map(|&n| vm.ctx.new_str(n).into());
+        PyFrozenSet::from_iter(vm, names)
+            .expect("Creating stdlib_module_names frozen set must succeed")
+            .to_pyobject(vm)
+    }
+
     #[pyattr]
     fn byteorder(vm: &VirtualMachine) -> PyStrRef {
         // https://doc.rust-lang.org/reference/conditional-compilation.html#target_endian