Dyess Air Force Base (AFB) (IATA: DYS, ICAO: KDYS, FAA LID: DYS) is a United States Air Force (USAF) base located about 7 miles (11 km) southwest of downtown Abilene, Texas, and 150 miles (240 km) west of Fort Worth, Texas.

The host unit at Dyess is the 7th Bomb Wing assigned to the Global Strike Command Eighth Air Force. The wing is one of only two B-1B Lancer strategic bomber wings in the USAF, the other being the 28th Bomb Wing at Ellsworth Air Force Base, South Dakota.

The 317th Airlift Wing, assigned to Air Mobility Command Eighteenth Air Force, is a tenant unit and one of four world-wide active-duty locations for the C-130 Hercules military transport aircraft.

Dyess AFB was established in 1942 as Abilene Army Air Base. It was renamed in honor of Texas native and Bataan Death March survivor Lieutenant Colonel William Dyess. As of 2023, the 7th Bomb Wing is commanded by Colonel Seth W. Spanier. The vice commander is Colonel Samuel M. Friend and the command chief master sergeant is Chief Master Sergeant Richelle D. Baker.

Dyess covers 6,409-acre (25.94 km2), and is home to the 7th Bomb Wing, which consists of four groups. The 9th and 28th Bomb Squadrons fly the B-1B. In addition, the 28th Bomb Squadron is the USAF schoolhouse for all B-1B aircrew members.