Vandenberg Air Force Base (IATA: VBG, ICAO: KVBG, FAA LID: VBG) is a United States Air Force Base 9.2 miles (14.8 km) northwest of Lompoc, California. It is under the jurisdiction of the 30th Space Wing, Air Force Space Command (AFSPC).

Vandenberg AFB is a Department of Defense space and missile testing base, with a mission of placing satellites into polar orbit from the West Coast using expendable boosters (Pegasus, Taurus, Minotaur, Atlas V, Delta IV and SpaceX's Falcon 9). Wing personnel also support the Service's LGM-30G Minuteman III Intercontinental Ballistic Missile Force Development Evaluation program.

In addition to its military mission, the base also leases launch pad facilities to SpaceX (SLC-4E), as well as 100 acres (40 ha) leased to the California Spaceport in 1995.

Established in 1941, the base is named in honor of former Air Force Chief of Staff General Hoyt Vandenberg.