Family name រត្ម័ (រត្ម័ 
) , all around the world, is an extremely rare surname. The last name រត្ម័ is characteristic of South-eastern Asia, particularly Cambodia, where it is a very rare surname. Also, រត្ម័ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| រត្ម័ | Cambodia |