diff --git a/.github/scripts/case_conflicts.py b/.github/scripts/case_conflicts.py
new file mode 100755
index 000000000..854ca7a6f
--- /dev/null
+++ b/.github/scripts/case_conflicts.py
@@ -0,0 +1,27 @@
+from collections import defaultdict
+from glob import glob
+
+def main() -> None:
+    found_conflict = False
+    all_markdown_paths = glob("../../*.md") + glob("../../**/*.md")
+
+    paths_by_lower_path = defaultdict(list)
+    for path in all_markdown_paths:
+        paths_by_lower_path[path.lower()].append(path)
+
+    for lower_path, original_paths in paths_by_lower_path.items():
+        #print(f"count={len(original_paths)} - {lower_path}")
+        if len(original_paths) == 1:
+            # No conflict.
+            continue
+
+        found_conflict = True
+        print("Conflict!")
+        for path in original_paths:
+            print(f"\t{path}")
+
+    if found_conflict:
+        exit(1)
+
+if __name__ == '__main__':
+    main()
\ No newline at end of file