Family name ฤทธิ์ทิตไกร (ฤทธิ์ทิตไกร 
) , in the entire world, is an extremely rare last name. The last name ฤทธิ์ทิตไกร is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| ฤทธิ์ทิตไกร | Thailand |