Surname Sonaiyan (Sonaiyan 
) , worldwide, is a rare family name. The last name Sonaiyan is characteristic of Malaysia, where it is a rare surname, and India, where it is an extremely rare surname. Much less frequently, Sonaiyan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sonaiyan | Malaysia, India |
Baskaran, Rajkumar, Yuvarani, Murugesan, and Tamilamuthan