Family name Chetthasing (Chetthasing 
) , worldwide, is a very rare cognomen. The cognomen Chetthasing is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Chetthasing | Thailand |
Somjit, Dusita, Sitthichot, and Phatcharee