Cognomen Yosaeng (ยอแสง 
, Yosaeng ) , across the world, is a rare family name. The surname Yosaeng is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Likewise, Yosaeng is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ยอแสง, Yosaeng | Thailand |