diff --git a/flang/tools/f18/flang b/flang/tools/f18/flang
--- a/flang/tools/f18/flang
+++ b/flang/tools/f18/flang
@@ -353,6 +353,15 @@
 # =============================================================================
 main() {
   check_bash_version
+
+  message="===============================================================================================\n
+    FLANG'S BASH WRAPPER SCRIPT\n
+    This _is not_ Flang's compiler driver. Use \`flang-new\` instead if you want to use the driver.\n
+    See: https://github.com/llvm/llvm-project/blob/main/flang/docs/FlangDriver.md#the-flang-script\n
+    for more details.\n
+   =============================================================================================="
+  echo -e $message
+
   parse_args "$@"
 
   if [[ $PRINT_VERSION == "True" ]]; then