Prison on Fire is a 1987 Hong Kong prison film directed by Ringo Lam Ling-tung (林岭东) and starring Chow Yun-fat (周潤發) and Tony Leung Ka-fai (梁家辉).

Lo Ka-yiu (Tony) is a young advertising executive in Hong Kong. One night, defending his father from attack, he accidentally shoves a street thug in front of a bus. Sentenced to three years in prison, Yiu is "fresh meat" for the hardened criminals and triad stooges that run things, and is preyed upon by sadistic prison officer "Scarface" Hung (張耀揚 Roy Cheung Yiu-yeung). The virtuous Chung Tin-ching (Chow) befriends Yiu and becomes an ally. A sequel, Prison on Fire II, was released in 1991.