Cognomen ကရင် (Karen 
, Kayin 
, ကရင် ) , throughout the world, is a widespread last name. The family name ကရင် is habitual in Mongolia, where it is a widespread surname, Honduras, where it is a common surname, and Nicaragua (explore the name in all countries). In absolute terms, it is the most numerous in Mexico, Honduras, and Mongolia. More frequently, ကရင် is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Karen | Philippines, Brazil, United Kingdom, United States, Mexico |
| Kayin | Australia, Myanmar, Canada, United Kingdom, United States |
| ကရင် | Myanmar |