Surname Onthath (Onthath 
) , all over the world, is a very rare family name. The last name Onthath is habitual in United Arab Emirates, where it is a rare surname, India, where it is an extremely rare surname, and China. Much less frequently, Onthath is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Onthath | China, United Arab Emirates, India |