In the United States and United Kingdom, a black project is in the vernacular a highly classified military/defense project, unacknowledged publicly by the government, military personnel, and defense contractors. Examples of U.S. military aircraft developed as black projects include the F-117 Nighthawk stealth attack aircraft and the B-2 Spirit stealth bomber, both of which were highly classified and denied to exist until ready to be announced to the public.
In the United States the formal term is Special Access Program (SAP).
A black site is a location where a black project takes place.
Previously classified 
- B-2 Spirit stealth bomber
- Boeing Bird of Prey technology demonstrator
- F-117 Nighthawk stealth ground-attack aircraft
- KH-11 KENNAN reconnaissance satellite
- SR-71 Blackbird Mach 3.3 very high-altitude reconnaissance aircraft
- Lockheed CL-400 Suntan high-altitude, high-speed reconnaissance prototype
- Lockheed U-2 very high-altitude reconnaissance aircraft
- Lockheed Martin RQ-170 Sentinel
- Lockheed Martin Polecat unmanned aerial vehicle
- Northrop Tacit Blue
- Operation Cyclone
- RQ-3 Dark Star high altitude reconnaissance UAV
- Lockheed Sea Shadow (IX-529) experimental stealth US Navy ship
- Hughes Mining Barge CIA project, authorized by Nixon 1974 to steal secrets from sunken Soviet sub K-129
Currently classified, but speculated 
See also 
- Eduardo Real: Zbigniew Brzezinski, Defeated by his Success
- An SR-72 in the works? - Air Force News, news from Iraq - Air Force Times
- National Reconnaissance Office Review and Redaction Guide. Version 1.0. 2006. p. 31.
- "Security News". FAS Project on Government Secrecy. June 7, 2007. Retrieved 2008-10-07.