Surname 保胤 (Yasutane 
, 保胤 
) , in the entire world, is a very rare family name. The surname 保胤 is habitual in Eastern Asia, particularly China, where it is an extremely rare surname. Much more prevalently, 保胤 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Yasutane | Japan |
| 保胤 | China |