Cognomen โกชา (Kocha 
, โกชา 
) , worldwide, is quite a rare family name. The cognomen โกชา is characteristic of Japan, where it is quite a rare surname, Georgia, where it is a rare surname, and Israel. In absolute terms, it is commonest in Japan, India, and the United States. Likewise, โกชา is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kocha | Japan, Ethiopia, Poland, United States, India |
| โกชา | Thailand |