Cognomen ทูนา (Thuna 
, ทูนา ) , around the globe, is a rare family name. The family name ทูนา is habitual in Myanmar, where it is a very rare surname, Thailand, and Canada. Not in comparison with a country's population, it is the most numerous in India, Myanmar, and the United States. More prevalently, ทูนา is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thuna | Philippines, Myanmar, United States, Thailand, India |
| ทูนา | Thailand |