diff --git a/modules/toolchains_llvm/0.10.3/MODULE.bazel b/modules/toolchains_llvm/0.10.3/MODULE.bazel
new file mode 100644
index 00000000000..4e833fa7de3
--- /dev/null
+++ b/modules/toolchains_llvm/0.10.3/MODULE.bazel
@@ -0,0 +1,23 @@
+# Copyright 2023 The Bazel Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+module(
+    name = "toolchains_llvm",
+    version = "0.10.3",
+    compatibility_level = 0,
+)
+
+bazel_dep(name = "bazel_skylib", version = "1.4.2")
+bazel_dep(name = "rules_cc", version = "0.0.8")
+bazel_dep(name = "platforms", version = "0.0.7")
diff --git a/modules/toolchains_llvm/0.10.3/presubmit.yml b/modules/toolchains_llvm/0.10.3/presubmit.yml
new file mode 100644
index 00000000000..4e824c4feef
--- /dev/null
+++ b/modules/toolchains_llvm/0.10.3/presubmit.yml
@@ -0,0 +1,27 @@
+matrix:
+  platform:
+  - ubuntu2004
+  - macos
+  - macos_arm64
+tasks:
+  verify_targets:
+    name: Verify build targets
+    platform: ${{ platform }}
+    build_targets:
+    - '@toolchains_llvm//toolchain:all'
+    - '@toolchains_llvm//platforms:all'
+bcr_test_module:
+  module_path: tests
+  matrix:
+    platform:
+    - ubuntu2004
+    - macos
+    - macos_arm64
+  tasks:
+    run_test_module:
+      name: Run test module
+      platform: ${{ platform }}
+      build_targets:
+      - //:all
+      test_targets:
+      - //:all
diff --git a/modules/toolchains_llvm/0.10.3/source.json b/modules/toolchains_llvm/0.10.3/source.json
new file mode 100644
index 00000000000..1132e40e3e1
--- /dev/null
+++ b/modules/toolchains_llvm/0.10.3/source.json
@@ -0,0 +1,5 @@
+{
+    "url": "https://github.com/grailbio/bazel-toolchain/releases/download/0.10.3/toolchains_llvm-0.10.3.tar.gz",
+    "integrity": "sha256-t80wHvew7OKNINPneGl6XjuBgoOTFQvtBIOMDFKWOgE=",
+    "strip_prefix": "toolchains_llvm-0.10.3"
+}
diff --git a/modules/toolchains_llvm/metadata.json b/modules/toolchains_llvm/metadata.json
new file mode 100644
index 00000000000..2240ff4d93f
--- /dev/null
+++ b/modules/toolchains_llvm/metadata.json
@@ -0,0 +1,17 @@
+{
+    "homepage": "https://github.com/grailbio/bazel-toolchain",
+    "maintainers": [
+        {
+            "email": "starsid@gmail.com",
+            "github": "siddharthab",
+            "name": "Siddhartha Bagaria"
+        }
+    ],
+    "repository": [
+        "github:grailbio/bazel-toolchain"
+    ],
+    "versions": [
+        "0.10.3"
+    ],
+    "yanked_versions": {}
+}