Ong-Bak: Muay Thai Warrior, also known as Ong-Bak: The Thai Warrior or simply Ong-Bak, is a 2003 Thai martial arts film directed by Prachya Pinkaew and featured action choreography by Panna Rittikrai. It stars Tony Jaa in the lead role, alongside Petchtai Wongkamlao and Pumwaree Yodkamol.

Prachya Pinkaew is a Thai film director, film producer and screenwriter. His films include Ong-Bak: Muay Thai Warrior and Tom-Yum-Goong, both martial arts films starring Tony Jaa.