Family name Thutchai (Thutchai 
) , all over the world, is an extremely rare last name. Much more prevalently, Thutchai is the forename as well as the last name.
Tula, Opaburanakul, Khoksri, Thadwijit, Sriwichai, Pawitrakul, Kasemwarapach, Khantapapha, Rungpairojcharoen, Kaewboonsong, and Wassanarungruang