Family name Kosonlawat (Kosonlawat 
) , globally, is a very rare surname. The last name Kosonlawat is habitual in Australia and New Zealand, particularly Australia, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kosonlawat | Australia |
Erika, John Ryan, Trakanchai, Jane Carissa, and Joanna Kate