Cognomen Denku (Denku 
) , throughout the world, is quite a rare family name. The surname Denku is habitual in Ethiopia, where it is quite a rare surname, Saudi Arabia, where it is a very rare surname, and Malaysia. More prevalently, Denku is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Denku | Saudi Arabia, Malaysia, India, Ethiopia, United States |