Family name Unku (Junco 
, Unku 
, Унку 
) , in the entire world, is a common surname. The cognomen Unku is characteristic of Aland Islands, where it is quite a common surname, Argentina, and Colombia, where it is quite a rare surname. Measured by absolute frequency, it is the most numerous in Latin America and the Caribbean, particularly Argentina, Colombia, and Mexico. Very seldom, Unku is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Junco | Mexico, Argentina, Peru, United States, Colombia |
| Unku | Russia, India, Germany, United States, Nigeria |
| Унку | Ukraine, Kazakhstan, Russia |