Cognomen Thiruvadi (Thiruvadi 
) , globally, is a rare surname. The cognomen Thiruvadi is habitual in Australia, where it is a very rare surname, Malaysia, and India. In absolute terms, it is commonest in India, Australia, and the United States. Much less frequently, Thiruvadi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thiruvadi | India, Malaysia, United States, Australia |