Cognomen រេញ (Ring 
, រេញ 
) , around the world, is a common surname. The surname រេញ is characteristic of Ireland, where it is quite a common surname, Myanmar, and Sweden (explore the name in all countries). Not in comparison with a country's population, it is the most numerous in the United States, Myanmar, and Germany. Much less frequently, រេញ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ring | Myanmar, United Kingdom, Malaysia, Germany, United States |
| រេញ | Cambodia |