Sagetdao Petpaiyathai (Thai: สะเก็ดดาว เพชรพญาไท; born January 1, 1987) is a Muay Thai fighter and mixed martial artist from Thailand who is currently signed to ONE Championship. He is a former Lumpinee Stadium champion in three weight classes and is known for his strong knee and clinch style of fighting. He now teaches at Evolve MMA in Singapore.