Naval Air Station Joint Reserve Base Fort Worth (abbreviated NAS JRB Fort Worth) (IATA: FWH, ICAO: KNFW, FAA LID: NFW) includes Carswell Field, a military airbase located 5 nautical miles (9 km; 6 mi) west of the central business district of Fort Worth, in Tarrant County, Texas, United States. This military airfield is operated by the United States Navy Reserve. It is located in the cities of Fort Worth, Westworth Village, and White Settlement in the western part of the Fort Worth urban area.

NAS Fort Worth JRB is the successor to the former Naval Air Station Dallas and incorporates other Reserve commands and activities, primarily those of the Air Force Reserve, that were present on site when the installation was known as Carswell Air Force Base, a former Strategic Air Command (SAC) facility later transferred to the Air Combat Command (ACC).

Several United States Navy headquarters and operational units are based at NAS Fort Worth JRB, including Naval Air Reserve air wings and aviation squadrons, intelligence commands and Seabees.

The Air Force Reserve Command's Tenth Air Force (10 AF) headquarters and the 301st Fighter Wing and its flying squadron the 457th Fighter Squadron continue to be based at the installation. The Wing is currently (2024) converting to the F-35 Lightning II after operating the F-16 for 32 years. The 136th Airlift Wing of the Texas Air National Guard and its flying component, the 181st Airlift Squadron, fly new stretch versions of the C-130J airlifter. MAG-41, a Marine Aircraft Group, with VMFA-112 (F-18C), VMGR-234 (KC-130J), VMR-1 (C-40A), and various ground units are also located at NAS Fort Worth JRB. VR-59 flies the C-40A personnel and cargo transport.

Aircraft types initially based at NAS Fort Worth JRB were the F-14 Tomcat, F/A-18 Hornet, C-9B Skytrain II, C-130 Hercules and KC-130 Hercules that relocated from the former NAS Dallas, joining extant F-16 Fighting Falcon aircraft that were previously located at the installation while it was known as Carswell Air Force Base and later as Carswell Air Reserve Station.