Nellis Air Force Base is a United States Air Force base located in North Las Vegas, Nevada. It is seven nautical miles (13 km) northeast of the central business district of Las Vegas. It was named in honor of P-47 pilot 1st Lieutenant William Harrell Nellis, who was killed in WWII during the Battle of the Bulge.

An installation of the Air Combat Command (ACC), Nellis is the location of the United States Air Force Warfare Center and is a major training location for both U.S. and foreign military aircrews. The main base covers approximately 11,300 acres (4,600 ha). Sixty-three percent of it is undeveloped, while the remaining area is either paved or contains structures.

The base consists of three major functional areas.

Area I includes the airfield and most of the mission support functions. Area II is east of Area I and contains the munitions area. Area III is across Las Vegas Boulevard from Area I. It contains housing, Mike O'Callaghan Federal Hospital, and open space. The associated Nevada Test and Training Range is located to the west in Nye and several other counties.