Cognomen พระอาทิตย์ (พระอาทิตย์ 
, Suneephorn , Sunlamet ) , worldwide, is a very rare last name. The cognomen พระอาทิตย์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. More frequently, พระอาทิตย์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Suneephorn, Sunlamet, Sunthoramust, พระอาทิตย์ | Thailand |
Phra Athit, Sun, Sundorn, Sunor, Sunsawass, Sunsee, Sunsern, Sunsing, Sunthontem, Suntontam, Suntorn, Suntornsing, Suntroramust, and Sunwised