Family name Suthasan (Suthasan 
) , across the world, is a rare surname. The surname Suthasan is characteristic of Sri Lanka, where it is a rare surname, and the United Kingdom, where it is an extremely rare surname. Very seldom, Suthasan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Suthasan | United Kingdom, Sri Lanka, Malaysia, Canada |