Sinthaweechai Hathairattanakool (Thai: สินทวีชัย หทัยรัตนกุล; RTGS: Sinthawichai Hathairattanakun, born 23 March 1982), formerly known as Kosin Hathairattanakool (Thai: โกสินทร์ หทัยรัตนกุล) and nicknamed Tee (Thai: ตี๋), is a Thai retired professional footballer who plays as a goalkeeper.
