Surname Khongnoon (Khongnoon 
) , in the world, is a very rare last name. The last name Khongnoon is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Khongnoon | Thailand |
Juree, Lamyai, Monchai, Kittipong, and Boonyanutch