Family name Chumjai (Chumjai 
) , worldwide, is a rare surname. The last name Chumjai is characteristic of Thailand, where it is quite a rare surname, and the United States, where it is an extremely rare surname. Very seldom, Chumjai is the forename as well as the last name.
Om, Pakjak, Jarmjuree, Tantip, Thanom, Titapa, Narong, Intira, Ongaod, Ongoad, Wenika, Yuphin, Mayuree, Sarayut, Surasak, Suthida, Suchada, Angsana, Boonrat, Karaked, Pathita, Panadda, Pairoj, Patita, Chanon, Aemrudee, Gun, Sopa, Anan, Anek, Kwan, Napa, Sukit, Seree, Sripa, Benja, Pavinee, Palin, Naret, Napha, Wijit, Mayura, Samart, Suphot, Anuluck, Arphon, Amphun, Athita, Janya, and Pakpoom