Marilou Diaz-Abaya
- Birth Date
- 3/30/1955 - 10/8/2012
- Birth Place
- Quezon City, Philippines
- Known For
- Directing

Marilou Díaz-Abaya (30 March 1955 – 8 October 2012) was a Filipina multi-award winning film director. She was the founder and president of the Marilou Díaz-Abaya Film Institute and Arts Center, a film school based in Antipolo, Philippines. She was the director of the 1998 film José Rizal, a biographical film on the Philippines' national hero. She was part of the Second Golden Age of Philippine Cinema.











