Family name Kaewnil (Kaewnil 
) , worldwide, is a rare last name. The last name Kaewnil is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname.
Sek, Sataporn, Arphapat, Chokpiti, Chutikan, Kaewwalee, Panthita, Phanuwat, Rachanon, Jiraporn, Jittapon, Chuntanee, Kittipong, Panchanit, Pichetpong, Trichadaporn, Naruephon, Vilasinee, Suphaphorn, Phatchanee, Mothanee, Wipamas, Nichada, Tusanai, Nida, Kanit, Rekha, Nidda, Waree, Mariam, Somkit, Anunya, Anucha, Nattharikran, Apinya, Vichan, Sarawut, Suwalee, Chutima, Kortoei, Komchan, Kittima, Premyada, Thitima, Jirapa, and Phrakrupalad Naratha