Last name Ин-Ок (Ин-Ок 
) , in the entire world, is an extremely rare surname. Much more prevalently, Ин-Ок is the forename as well as the last name. Parts of the name also exists independently as a first name Ин, and a first name Ок.
| VARIANT | COUNTRY |
|---|---|
| Ин-Ок | Kazakhstan |