Project X may refer to:

• Project X, a novel by Jim Shepard
• A fictional weapon in the novel Atlas Shrugged
• Project X Entertainment, a production/financing company run by James Vanderbilt, William Sherak, and Paul Neinstein

• Project X (1949 film), an American film
• Project X (1968 film), a science fiction film featuring Christopher George
• Project X (1987 film), a film starring Matthew Broderick
• Project X (2012 film), a comedy film about three teens who have a party that gets out of control
• Project X: Chôsensha tachi (2000–2005), a documentary television series hosted by NHK presenter Junko Kubo

• Project X, a racing car game for Tizen
• Project-X, a 1992 scrolling shooter game for the Amiga computer
• Project X (series), a series of crossover tactical role-playing games for the PlayStation 2 and later Nintendo 3DS

• Project X (band), a 1987 short-lived band
• Project X: Iconic, a 2009 hip hop album by Tim Dog with Kool Keith and Mark Live
• Project X (album), 2021 album by Ken Carson

• Project X (accelerator), a proposed high intensity proton accelerator at the Fermi National Accelerator Laboratory
• SIGSALY, an early secure speech system also known as "Project X"
• Code name of HotSauce, experimental visualization software developed by Apple Computer
• Original name of Nuon (DVD technology), a platform to enhance DVDs
• A small (A-segment) battery electric vehicle platform developed by the Mobility in Harmony Consortium

• Project X, a warez group, scene release group that released Xbox games
• Project X Haren, an out of control birthday party which resulted in street riots in Haren, Netherlands, named after the 2012 Project X movie
• A military effort of the Army Foreign Intelligence Assistance Program
• A scandal involving Department of Homeland Security employee Laura Callahan
• An early code name for Walt Disney's EPCOT Project, now the Walt Disney World Resort
• Code name for the development of the Messerschmitt Me 163 World War II aircraft
• Code name for a Pet Simulator X skid project

• Weapon X (disambiguation)

This disambiguation page lists articles associated with the title Project X.
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