Surname Ratachai (Ratachai 
) , in the entire world, is an extremely rare family name. Much more prevalently, Ratachai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ratachai | Thailand |
Loasri, Leawtrakul, Olanwanakit, Teratanavat, Vasnarungruengkul, and Sukrungruangrong