Cognomen Vairamuthu (Vairamuthu 
) , in the world, is a rare surname. The last name Vairamuthu is habitual in Sri Lanka, where it is quite a rare surname, Qatar, where it is a rare surname, and United Arab Emirates. In absolute terms, it most frequently occurs in Sri Lanka, India, and Malaysia. Also, Vairamuthu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Vairamuthu | Canada, Malaysia, India, Sri Lanka, United Arab Emirates |
|
kabilan vairamuthu Indian writer, IN (b. 1982) |
|
| p. k. vairamuthu Indian politician, IN (b. 1954) |
|