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 | Kazakhstan, Russia, Kyrgyzstan |
| Суюн | Kazakhstan, Kyrgyzstan, Uzbekistan, Russia, Ukraine |
| Suiun | Russia, United States, Kyrgyzstan, Japan |
| Суиун | Russia |