Last name Tonsun (Tonsun 
, ตันสุน 
) , across the world, is a rare surname. The cognomen Tonsun is characteristic of Thailand, where it is a rare surname, Malaysia, where it is an extremely rare surname, and Germany.
| VARIANT | COUNTRY |
|---|---|
| Tonsun | Germany, Malaysia |
| ตันสุน | Thailand |