Ong-bak is a Thai film directed by Prachya Pinkaew, released on January 21, 2003.
The prequel of the film Ong-bak is Ong-bak 2: The Birth of the Dragon released in 2008. There is also Ong-bak 3: The Ultimate Battle, a direct continuation of the film Ong-bak 2, released in 2010.