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Family name Kosal (កុសល , Kosal ) , in the world, is quite a rare surname. The family name Kosal is habitual in Cambodia, where it is quite a rare surname, Malaysia, where it is a rare surname, and Czechia. Measured by absolute frequency, it is commonest in Cambodia, India, and the United States. More prevalently, Kosal is the forename as well as the last name.
So, Chan, Chau, Chea, Beng, Kong, Khan, Prom, Phan, Devi, Leng, Long, Heng, Vong, Singh, Sieng, Chhun, Kumar, Raman, Touch, Yadav, Sharma, Srey, Song, Seng, Suon, Ky, Ly, Mao, San, Sar, Sam, Sin, Sim, Sun, Sen, Kishor, Som, Bai, Bun, Kol, Keo, Kim, Ram, Lim, Hem, Oum, Sain, Sok, and Prasad