Family name Suwonno (Suwonno 
) , in all the world, is a very rare last name. The cognomen Suwonno is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Suwonno | Thailand |
Laekar, Nilobon, Rutchanok, Natthakorn, and Wadcharawalee