Surname อุฤทธิ์ (อุฤทธิ์ 
, Urit 
) , in all the world, is a rare last name. The surname อุฤทธิ์ is habitual in Thailand, where it is a rare surname, Mexico, where it is a very rare surname, and India. Also, อุฤทธิ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| อุฤทธิ์ | Thailand |
| Urit | India, Mexico, Thailand, Malaysia, Indonesia |