Tonopah may refer to:
- Tonopah, Arizona, a community
- Tonopah, Nevada, a community
- Tonopah Air Force Station, a Cold War radar station along with Las Vegas Air Force Station
- Tonopah Basin, Central Basin and Range ecoregions around the Tonopah Playas
- Tonopah Bombing Range, the 1940 World War II designation of the military region
- Tonopah Test Range, a nuclear test area SW of the Tonopah Bombing Range
- Tonopah Air Force Base, the 1949 main base for the bombing range
- Tonopah Army Air Field, the main base's name in World War II
- Tonopah Test Range Airport
- USS Tonopah, the ship renamed from Monitor USS Nevada (BM-8) in 1909