Family name สุใจ (Suchai 
, สุใจ ) , all over the world, is a rare surname. The surname สุใจ is characteristic of Thailand, where it is a rare surname, Malaysia, where it is a very rare surname, and China, where it is an extremely rare surname. More prevalently, สุใจ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Suchai | Malaysia, China, Thailand, India, United States |
| สุใจ | Thailand |