diff --git a/runtime/indent/arduino.vim b/runtime/indent/arduino.vim
new file mode 100644
index 0000000..88717ac
--- /dev/null
+++ b/runtime/indent/arduino.vim
@@ -0,0 +1,16 @@
+" Vim indent file
+" Language:	Arduino
+" Maintainer:	The Vim Project <https://github.com/vim/vim>
+"		Ken Takata <https://github.com/k-takata>
+" Last Change:	2024 Apr 03
+
+" Only load this indent file when no other was loaded.
+if exists("b:did_indent")
+  finish
+endif
+let b:did_indent = 1
+
+" Use C indenting.
+setlocal cindent
+
+let b:undo_indent = "setl cin<"