Family name Suiun (Суйун 
, Суюн 
, Suiun 
) , all over the world, is quite a rare surname. The surname Suiun is characteristic of Kyrgyzstan, where it is quite a common surname, Russia, where it is a very rare surname, and Kazakhstan. More prevalently, Suiun is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Суйун | Kyrgyzstan, Kazakhstan, Russia |
| Суюн | Uzbekistan, Kazakhstan, Russia, Kyrgyzstan, Ukraine |
| Suiun | Japan, Kyrgyzstan, Russia, United States |
| Суиун | Russia |