Surname โยชัย (Yochai 
, โยชัย , Yo Chai 
) , all over the world, is a very rare cognomen. The last name โยชัย is characteristic of Israel, where it is a rare surname, Thailand, where it is a very rare surname, and the United States, where it is an extremely rare surname. Also, โยชัย is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Yochai | South Africa, Thailand, United States, India, Israel |
| โยชัย | Thailand |
| Yo Chai | Malaysia |