diff --git a/external/antithesis-sdk/.clang-format b/external/antithesis-sdk/.clang-format
new file mode 100644
index 00000000000..8e1095dd6a6
--- /dev/null
+++ b/external/antithesis-sdk/.clang-format
@@ -0,0 +1,4 @@
+{
+    "DisableFormat": true,
+    "SortIncludes": false,
+}