Cognomen โรซัน (Rosun 
, โรซัน 
) , all over the world, is a rare surname. The family name โรซัน is habitual in Mauritius, where it is quite a common surname, New Zealand, where it is a rare surname, and Bangladesh, where it is a very rare surname. Not in comparison with a country's population, the name is most common in Mauritius, Bangladesh, and the United Kingdom. Likewise, โรซัน is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rosun | Bangladesh, Nepal, India, Saudi Arabia, Mauritius |
| โรซัน | Thailand |