The Woman in the Septic Tank (Tagalog: Ang Babae Sa Septic Tank) is a 2011 Philippine independent film starring Eugene Domingo. The film is 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 and grossed 38.4 million pesos becoming the highest grossing independent film in Philippine cinema history.

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 through 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.