Cognomen គ្រុម (គ្រុម 
) , in the entire world, is a very rare last name. The cognomen គ្រុម is characteristic of South-eastern Asia, particularly Cambodia, where it is a rare surname. Also, គ្រុម is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| គ្រុម | Cambodia |