Cognomen Суйун (Suyun 
, Sujun 
, Суйун 
) , throughout the world, is quite a rare surname. The family name Суйун is habitual in Kyrgyzstan, where it is quite a common surname, Mauritius, where it is quite a rare surname, and Oman. Not in comparison with a country's population, it most frequently occurs in Kyrgyzstan, Bangladesh, and Turkey. More prevalently, Суйун is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Suyun | Malaysia, China, South Korea, Taiwan, Turkey |
| Sujun | Malaysia, China, Taiwan, Bangladesh, Japan |
| Суйун | Kazakhstan, Russia, Kyrgyzstan |
| Suiun | Russia, United States, Kyrgyzstan, Japan |