Tiyanak is a 1988 Filipino horror film directed by Peque Gallaga and Lorenzo A. Reyes and co-written by Gallaga, Reyes, and Don Escudero, based on the mythical creature of the same name. It stars Janice de Belen, Lotlot de Leon, Ramon Christopher, Mary Walter, Chuckie Dreyfus, Carmina Villaroel, Rudolph Yaptinchay, and Smokey Manaloto.

Tiyanak was released by Regal Films on September 15, 1988. Though other critics were disappointed with the film, Tiyanak received praise from Lav Diaz for being remarkably frightening. Eduardo Jacinto won the Film Academy of the Philippines Award for Best Cinematography.