Cognomen اكو (Aku 
, اكو 
, Acko 
) , across the world, is a common last name. The last name اكو is characteristic of Ghana, where it is quite a rare surname, Slovenia, and Brunei. In absolute terms, the name is most common in Nigeria, Indonesia, and Japan. More prevalently, اكو is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Aku | India, Ghana, Indonesia, Nigeria, Japan |
| اكو | Iran, Iraq, Egypt, Sudan, Saudi Arabia |
| Acko | North Macedonia, India, Serbia, Slovenia, Nigeria |