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In the entire world, Ruachai (ฤาไชย , Ruachai
) is an extremely rare male forename. More frequently, Ruachai is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| ฤาไชย | Thailand |
| Ruachai | Thailand, United States |
Santi, Thanida, Jakkapan, Wutthisit, and Kritsanasak