Cognomen コウノ (コウノ 
, Kono 
, Kouno 
) , in the entire world, is a common last name. The surname コウノ is habitual in Sub-Saharan Africa, particularly Cameroon, where it is quite a common surname, the Democratic Republic of the Congo, where it is quite a rare surname, and Botswana. In absolute terms, this name is the most popular in the Democratic Republic of the Congo, Cameroon, and Indonesia. Likewise, コウノ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| コウノ | Japan |
| Kono | Egypt, Japan, Indonesia, Democratic Republic of the Congo, Cameroon |
| Kouno | China, Japan, India, Brazil, United States |