diff --git a/runtime/ftplugin/ptx.vim b/runtime/ftplugin/ptx.vim
new file mode 100644
index 0000000..12b127c
--- /dev/null
+++ b/runtime/ftplugin/ptx.vim
@@ -0,0 +1,16 @@
+" Vim filetype plugin file
+" Language:	Nvidia PTX (Parellel Thread Execution)
+" Maintainer:	Yinzuo Jiang <jiangyinzuo@foxmail.com>
+" Last Change:	2024-12-05
+
+if exists("b:did_ftplugin")
+  finish
+endif
+
+let b:did_ftplugin = 1
+
+" Comments in PTX follow C/C++ syntax
+" See: https://docs.nvidia.com/cuda/parallel-thread-execution/#syntax
+setlocal commentstring=//\ %s
+
+let b:undo_ftplugin = 'setl commentstring<'