Surname Atthachai (อรรถชัย 
, Atthachai 
) , around the globe, is a very rare last name. The family name Atthachai is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Predominantly, Atthachai is the forename as well as the last name.
Chai, Yoswongchai, Yotwongjai, Meethong, Chaisiri, Chueasing, Khongsap, Khonyang, Juncharoen, Jitnarong, Thongrak, Sriworabhat, Chimchuai, Puttharat, Puttharad, Jaichalad, Nikornkul, Inthachak, Keawkanjana, Pramuansin, Piyawansakun, Phongsuwan, Wongsit, Homhuan, Naivikul, Juttiphon, Simdee, Senhom, Seejan, Chinna, Bundit, Koysuklo, Intiya, Sanglek, Saenyot, Saewong, Trongwattananon, Siwiset, Somklin, Sribura, Choosri, Kumprom, Kumsiri, Kueatung, Palapan, Pramoon, Prompha, Phudethip, Somboon, and Kaewkerdken