Ang Babae sa Septic Tank

The Woman in the Septic Tank
Theatrical movie poster
Directed by	Marlon Rivera
Produced by	Chris Martinez Marlon Rivera Josabeth Alonso John Victor Tence
Written by	Chris Martinez
Screenplay by	Chris Martinez
Starring	JM De Guzman Kean Cipriano Cai Cortez Eugene Domingo
Music by	Vincent De Jesus Albert Michael Idioma Addiss Tabong
Cinematography	Larry Manda
Edited by	Ike Veneracion
Production company	Cinemalaya Martinez Rivera Films Quantum Films Straight Shooters Media, Inc.
Distributed by	Star Cinema
Release date	July 15, 2011 (2011-07-15)
Running time	87 minutes
Country	Philippines
Language	Tagalog
Box office	P38.4 million

The Woman in the Septic Tank (Tagalog: ''Ang Babae Sa Septic Tank'') is a 2011 Filipino comedy independent film directed by Marlon N. Rivera, written by Chris Martinez, and starring JM De Guzman, Kean Cipriano, Cai Cortez and Eugene Domingo. The film follows three aspiring filmmakers who are set out to make a film for the sole purpose of receiving international recognition and awards.

The Woman in the Septic Tank was submitted as the Philippines' official entry for the 2011 Academy Awards for Best Foreign Film, and was an entry for the 2011 Cinemalaya Festival. It was produced by Martinez-Rivera Films and Quantum Films. The film was released on August 3, 2011 by Star Cinema and grossed 38.4 million pesos and was the highest grossing Filipino independent film at the time until it was surpassed in 2015 by That Thing Called Tadhana.

Chris Martinez wrote the screenplay for the film. Martinez and Rivera submitted the film for the "New Breed, Full Length Film" category for the 7th Cinemalaya Independent Film Festival. The festival was held from July 15 to the 24th at the Cultural Center of the Philippines.

After the mass critical success of the movie at the film festival, Star Cinema purchased the rights to release the film for a wider release. The film was released on August 3, 2011 to over 50 theaters nationwide and grossed almost 40 million pesos becoming the highest grossing Philippine independent film at the time.

Jocelyn, Rainier, and Bingbong are three film school graduates who are dead-set on making an Oscar-worthy film. They set out to do a quick pre-production as a courtesy call to their lead actress played by Eugene Domingo, and a thorough inspection of their film’s major location, the Payatas dumpsite. They believe they have a winning script, and the energy and drive to make their dreams come true, no matter what the cost.