The High Virgo, also known as Weapons System 199C (WS-199C), was a prototype air-launched ballistic missile (ALBM) jointly developed by Lockheed and the Convair division of General Dynamics during the late 1950s.

As part of the WS-199 project to develop new strategic weapons for the United States Air Force's Strategic Air Command, the Lockheed Corporation and the Convair division of General Dynamics proposed the development of an air-launched ballistic missile, to be carried by the Convair B-58 Hustler supersonic medium bomber.

[2] While the project was intended to be strictly a research-and-development exercise, it was planned that the weapon would be quickly capable of being developed into an operational system if required.

Due to development problems, the first two did not include the inertial guidance system, instead they were fitted with a simple autopilot guiding the weapon on a pre-programmed course.

[1][3] Launched from its B-58 carrier aircraft at high altitude and supersonic speed, the initial flight, conducted on September 5, 1958, was a failure when the missile's controls malfunctioned.