Alpha Kappa Omega Batch '81 is a 1982 Filipino psychological drama film directed by Mike de Leon from a screenplay he co-written with Clodualdo del Mundo Jr. and Raquel Villavicencio. The film depicts the titular fraternity's harsh initiation of new batch members as seen through the eyes of pre-med student Sid Lucero, played by Mark Gil in what is generally recognized as his breakout role.