diff --git a/libcxx/docs/Contributing.rst b/libcxx/docs/Contributing.rst
--- a/libcxx/docs/Contributing.rst
+++ b/libcxx/docs/Contributing.rst
@@ -47,6 +47,7 @@
 - Did you add all new named declarations to the ``std`` module?
 - If you added a header:
 
+  - Did you add it to ``include/__std``?
   - Did you add it to ``include/module.modulemap.in``?
   - Did you add it to ``include/CMakeLists.txt``?
   - If it's a public header, did you update ``utils/libcxx/test/header_information.py``?
diff --git a/libcxx/include/CMakeLists.txt b/libcxx/include/CMakeLists.txt
--- a/libcxx/include/CMakeLists.txt
+++ b/libcxx/include/CMakeLists.txt
@@ -653,6 +653,7 @@
   __ranges/views.h
   __ranges/zip_view.h
   __split_buffer
+  __std
   __std_mbstate_t.h
   __stop_token/atomic_unique_lock.h
   __stop_token/intrusive_list_view.h
diff --git a/libcxx/include/__std b/libcxx/include/__std
new file mode 100644
--- /dev/null
+++ b/libcxx/include/__std
@@ -0,0 +1,161 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#if !__building_module(std)
+#  error "Do not include this header directly, include individual headers instead"
+#endif
+
+#include <algorithm>
+#include <any>
+#include <array>
+#include <atomic>
+#include <barrier>
+#include <bit>
+#include <bitset>
+#include <charconv>
+#include <chrono>
+#include <codecvt>
+#include <compare>
+#include <complex>
+#include <concepts>
+#include <condition_variable>
+#include <coroutine>
+#include <deque>
+#include <exception>
+#include <execution>
+#include <expected>
+#include <filesystem>
+#include <format>
+#include <forward_list>
+#include <fstream>
+#include <functional>
+#include <future>
+#include <initializer_list>
+#include <iomanip>
+#include <ios>
+#include <iosfwd>
+#include <iostream>
+#include <istream>
+#include <iterator>
+#include <latch>
+#include <limits>
+#include <list>
+#include <locale>
+#include <map>
+#include <mdspan>
+#include <memory>
+#include <memory_resource>
+#include <mutex>
+#include <new>
+#include <numbers>
+#include <numeric>
+#include <optional>
+#include <ostream>
+#include <print>
+#include <queue>
+#include <random>
+#include <ranges>
+#include <ratio>
+#include <regex>
+#include <scoped_allocator>
+#include <semaphore>
+#include <set>
+#include <shared_mutex>
+#include <source_location>
+#include <span>
+#include <sstream>
+#include <stack>
+#include <stdexcept>
+#include <stop_token>
+#include <streambuf>
+#include <string>
+#include <string_view>
+#include <strstream>
+#include <system_error>
+#include <thread>
+#include <tuple>
+#include <type_traits>
+#include <typeindex>
+#include <typeinfo>
+#include <unordered_map>
+#include <unordered_set>
+#include <utility>
+#include <valarray>
+#include <variant>
+#include <vector>
+#include <version>
+
+#include <cassert>
+#include <ccomplex>
+#include <cctype>
+#include <cerrno>
+#include <cfenv>
+#include <cfloat>
+#include <cinttypes>
+#include <ciso646>
+#include <climits>
+#include <clocale>
+#include <cmath>
+#include <csetjmp>
+#include <csignal>
+#include <cstdarg>
+#include <cstdbool>
+#include <cstddef>
+#include <cstdint>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <ctgmath>
+#include <ctime>
+#include <cuchar>
+#include <cwchar>
+#include <cwctype>
+
+#include <complex.h>
+#include <ctype.h>
+#include <errno.h>
+#include <fenv.h>
+#include <float.h>
+#include <inttypes.h>
+#include <limits.h>
+#include <locale.h>
+#include <math.h>
+#include <setjmp.h>
+#include <stdatomic.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <tgmath.h>
+#include <uchar.h>
+#include <wchar.h>
+#include <wctype.h>
+
+#include <experimental/deque>
+#include <experimental/forward_list>
+#include <experimental/iterator>
+#include <experimental/list>
+#include <experimental/map>
+#include <experimental/memory_resource>
+#include <experimental/propagate_const>
+#include <experimental/regex>
+#include <experimental/set>
+#include <experimental/simd>
+#include <experimental/string>
+#include <experimental/type_traits>
+#include <experimental/unordered_map>
+#include <experimental/unordered_set>
+#include <experimental/utility>
+#include <experimental/vector>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#  pragma GCC system_header
+#endif
diff --git a/libcxx/include/module.modulemap.in b/libcxx/include/module.modulemap.in
--- a/libcxx/include/module.modulemap.in
+++ b/libcxx/include/module.modulemap.in
@@ -627,6 +627,13 @@
   }
 }
 
+// Convenience method to get all of the above modules in a single import statement.
+// Importing only the needed modules is likely to be more performant.
+module std [system] {
+  header "__std"
+  export *
+}
+
 // Implementation detail headers that are private to libc++. These modules
 // must not be directly imported.
 module std_private_assert            [system] {
diff --git a/libcxx/utils/generate_iwyu_mapping.py b/libcxx/utils/generate_iwyu_mapping.py
--- a/libcxx/utils/generate_iwyu_mapping.py
+++ b/libcxx/utils/generate_iwyu_mapping.py
@@ -77,6 +77,8 @@
             continue
         elif i == "__split_buffer":
             public = ["deque", "vector"]
+        elif i == "__std":
+            continue
         elif i == "__std_mbstate_t.h":
             continue
         elif i == "__threading_support":