Family name อรชุนกะ (Arjunaka 
, อรชุนกะ , Orachunaka ) , globally, is a very rare surname. The surname อรชุนกะ is characteristic of Thailand, where it is a very rare surname, and the United States, where it is an extremely rare surname. Much less frequently, อรชุนกะ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Arjunaka | United States, India, Thailand |
| อรชุนกะ, Orachunaka | Thailand |