Surname コタカ (Kotaka 
, コタカ ) , in the entire world, is a rare last name. The family name コタカ is habitual in Luxembourg, where it is quite a rare surname, Thailand, where it is a very rare surname, and Brazil. In absolute terms, it is the most numerous in India, Brazil, and Thailand. More prevalently, コタカ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kotaka | Brazil, Japan, United States, Thailand, India |
| コタカ | Japan |