Around the world, สุฤทธิ์ (Surit 
, สุฤทธิ์ , Somsanuk 
) is quite a common dominantly boy's, but uncommonly feminine forename. The forename สุฤทธิ์ is habitual in Thailand, where it is a rare mostly boy's, but infrequently girly name, India, and Mexico, where it is a very rare largely female, but infrequently masculine name. Much less frequently, สุฤทธิ์ is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Surit | Thailand, India, Mexico, Indonesia, Malaysia |
| สุฤทธิ์ | Thailand |
| Somsanuk | Thailand, United States |