Cognomen Тунян (Тунян 
, Tunian 
, Tunyan 
) , throughout the world, is quite a rare last name. The surname Тунян is habitual in Armenia, where it is quite a rare surname, Papua New Guinea, and Lithuania. Measured by absolute frequency, this name is the most popular in Russia, Papua New Guinea, and Armenia. Likewise, Тунян is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Тунян | Kazakhstan, Ukraine, Belarus, Armenia, Russia |
| Tunian | China, Indonesia, India, Papua New Guinea, Armenia |
| Tunyan | China, Nigeria, India, Myanmar, Armenia |
| Tunjan | Malaysia, Thailand, Indonesia, India, Philippines |