Family name ເອກ (Eka 
, ເອກ 
, एक ) , in all the world, is a widespread cognomen. The surname ເອກ is habitual in Georgia, where it is a common surname, Indonesia, where it is quite a common surname, and Papua New Guinea, where it is quite a rare surname. Not in comparison with a country's population, it is the most numerous in India, Indonesia, and Georgia. More prevalently, ເອກ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Eka | India, Indonesia, Georgia, Democratic Republic of the Congo, Nigeria |
| ເອກ | Laos |
| एक | India |