Throughout the world, Sainbuyan (Sainbuyan 
) is an extremely rare boy's forename. Much more frequently, Sainbuyan is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Sainbuyan | Mongolia, United States |
| sainbuyan amarsaikhan Deputy Prime Minister of Mongolia (b. 1973) |
|
Badam, Enkhee, Munkh-Erdene, Selenge, Amgalan, Yanjmaa, Amarsaikhan, Badamtsetseg, and Bayarsaikhan