Cognomen Sayashi (Sayashi 
, Рихо 
, Саяси 
) , worldwide, is a very rare family name. The cognomen Sayashi is characteristic of Israel, where it is a very rare surname, Kazakhstan, and India, where it is an extremely rare surname. More frequently, Sayashi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sayashi | India, Israel |
| Рихо | Russia, Estonia |
| Саяси | Kazakhstan |