Philip Alexander Gibney (/ˈɡɪbni/; born October 23, 1953) is an American documentary film director and producer.

"[1] Gibney's works as director include The Inventor: Out for Blood in Silicon Valley, Going Clear: Scientology and the Prison of Belief (winner of three Emmys in 2015), We Steal Secrets: The Story of Wikileaks, Mea Maxima Culpa: Silence in the House of God (the winner of three 2013 primetime Emmy awards), Enron: The Smartest Guys in the Room (nominated in 2005 for Academy Award for Best Documentary Feature); Client 9: The Rise and Fall of Eliot Spitzer (short-listed in 2011 for the Academy Award for Best Documentary Feature), Casino Jack and the United States of Money, and Taxi to the Dark Side (winner of the 2007 Academy Award for Best Documentary Feature), focusing on a taxi driver in Afghanistan who was tortured and killed at Bagram Air Force Base in 2002.

Gibney developed an anti-authoritarian view from the journalism career of his father: "They say to succeed you're supposed to suck up and kick down.

In an interview with Robert K. Elder for The Film That Changed My Life, Gibney credits much influence on his filming style to The Exterminating Angel: [The Exterminating Angel is] dark, but it's also wickedly funny and mysterious in ways that can't be reduced to a simple, analytical explanation.

The film probes the killing of a taxi driver named Dilawar at Bagram Air Force Base in Afghanistan.

The Wikileaks organization itself has objected to the way Gibney portrayed it, and has posted a line-by-line rebuttal to the entire film.

Gibney's most recent projects include work on The Armstrong Lie (about Lance Armstrong), Catching Hell (a contribution to ESPN's '30 for 30' series which looks at "The Inning" in Game 6 of the 2003 National League Championship Series), Going Clear (a documentary about Scientology), Dirty Money (doc-series that explores corporate greed and corruption), The Looming Tower (fiction series based on the book by Lawrence Wright of which he directed the pilot), and The Inventor: Out for Blood in Silicon Valley, which premiered at Sundance 2019.

[16] [17] In December 2024, it was reported that Gibney and Anonymous Content were working on a documentary on Luigi Mangione, the alleged shooter involved in the killing of UnitedHealthCare CEO Brian Thompson.

[21] On June 19, 2008, Gibney's company filed for arbitration, arguing that THINKFilm failed to properly distribute and promote his film Taxi to the Dark Side.