Family name Karnnithi (Karnnithi 
) , worldwide, is an extremely rare last name. The family name Karnnithi is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More prevalently, Karnnithi is the forename as well as the last name.
Poemponthaweekoon, Leenithiroj, Ngamsaeng, Kaewmanee, Permpholthaweekoon, and Patcharaphonwat