Proposed interceptor version of F-100B, did not advance beyond mock-up.
Seventy Model NA-214 and 381 Model NA-217.
Additional fuel tanks in the wings, fighter-bomber capability, probe-and-drogue refuelling capability, uprated J57-P-21 engine on late production aircraft.
First flight: March 1954; 476 built.
One F-100C converted into a two-seat training aircraft.
Single-seat fighter-bomber, more advanced avionics, larger wing and tail fin, landing flaps.
First flight: 24 January 1956; 1,274 built.
Two-seat training version, armament decreased from four to two cannon.
First flight: 7 March 1957; 339 built.
This designation was given to one F-100F that was used as drone director.
Three F-100Fs used for test purposes, the prefix “N” indicates that modifications prevented return to regular operational service.
Specific Danish designation given to 14 F-100Fs exported to Denmark in 1974 in order to distinguish these from the 10 F-100Fs delivered 1959–1961.
Another 209 D and F models were ordered and converted to unmanned radio-controlled Full Scale Aerial Target drones and drone directors for testing and destruction by modern air-to-air missiles used by current U.S. Air Force fighter jets.
Unbuilt all-weather export version for Japan
Unbuilt design study for a two-seat F-100F powered by a J57-P-55 engine
Unbuilt design study for a single-seat F-100D powered by a J57-P-55 engine
Unbuilt version with simplified avionics for NATO customers
Proposed French-built F-100F with Rolls-Royce Spey turbofan engine