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Family name Rattanachai (รัตนชัย , Rattanachai
, รัตนไชย
) , in all the world, is quite a rare cognomen. The last name Rattanachai is characteristic of Thailand, where it is quite a rare surname, Malaysia, where it is an extremely rare surname, and the United States. More frequently, Rattanachai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| รัตนไชย, รัตนชัย | Thailand |
| Rattanachai | China, Malaysia, United States, Thailand |