Sinthaweechai Hathairattanakool (Thai: สินทวีชัย หทัยรัตนกุล; RTGS: Sinthawichai Hathairattanakun, born March 23, 1982 as Kosin Hathairattanakool (Thai: โกสินทร์ หทัยรัตนกุล)), simply known as Tee (Thai: ตี๋) is a Thai professional footballer who plays as a goalkeeper for Thai League 1 club Police Tero and the Thailand national team.