List of helicopters used in World War II

Germany
Some types in use of Luftwaffe and Kriegsmarine
 * Focke-Wulf Fw C.30A (La Cierva C.30A) (General Purpose autogyro)
 * Focke-Wulf Fw 186 (Liaison autogyro)
 * Focke-Wulf Autogyro-Helicopter (Experimental prototype)
 * Focke-Wulf Fw 61 (Experimental helicopter)
 * Focke Achgelis Fa 330 "Bachstelze" (Autogyro-Glider/Observation vehicle)
 * Focke Achgelis Fa 266 "Hornisse" (Civil Transport helicopter), re-designated as Fa 223 in 1939 before the first prototype flew.
 * Focke Achgelis Fa 223 "Drache" (General Use/Transport helicopter)
 * Focke Achgelis (DFS) Fa 225 (Assault-autogyro glider)
 * Focke Achgelis Fa 284 (Flying Crane/Heavy Transport helicopter) prototype designed but not completed
 * Flettner Fl 184 (Two-Place autogyro)
 * Flettner Fl 185 Heligyro (helicopter-autogyro)
 * Flettner Fl 265 (Twin Rotor Liaison-Observation helicopter, pioneer of synchropter confguration)
 * Flettner Fl 282A/B "Kolibri" (attack synchropter)
 * Flettner Fl 339 (Reconnaissance helicopter)
 * Nagler-Hafner RI Revoplane(Experimental helicopter)
 * Nagler-Hafner RII Revoplane(Single-place helicopter)
 * Nagler-Hafner Heliogyro (Autogyro-helicopter)
 * Nagler-Rolz RI (Single-place helicopter)
 * Nagler-Rolz RII (Single-place helicopter)
 * Nagler-Rolz NR 54 (One-Man portable helicopter)
 * Nagler-Rolz Nr 55 (One-Man portable helicopter)
 * Baumgartl "Heliofly" I (Light Autogyro-glider)
 * Baumgartl "Heliofly" III-57 (Two Contra-rotating helicopter)
 * Baumgartl "Heliofly" III-59 (Little and light disarmable helicopter)
 * Wiener Neustadter (Doblohff) WNF 342  (Tip-Jet helicopter)
 * Weserflug P.1003/1 VTOL (Vertical TakeOff and Landing) aircraft project
 * AEG (Schimdt) Electric-Tethered Helicopter (Unmanned Vehicle for raising radio antenna or Manned aerial observation platform)

United States
In use by USAAF, US Navy and USCG
 * Kellet KD-1A (La Cierva C.30A) (General Use Autogyro)
 * Sikorsky VS-300 (Experimental helicopter)
 * Sikorsky R-4B "Hoverfly" (General Applications helicopter)
 * Sikorsky YR-4B "Hoverfly" (Ambulance/Sea Patrol helicopter)
 * Sikorsky R-5A (Rescue/Reconnaissance helicopter)
 * Platt-LePage XR-1 (Experimental helicopter)
 * Kellet Cobra XX-9 (Attack helicopter)

Great Britain
In use by RAF and FAA
 * Avro 671 "Rota" Mk.1 (La Cierva C.30A) (General Purpose Autogyro)
 * Weir W.5/6 (Helicopter based on Fw 61 Design)
 * Bristol "Heliogyro" RI/II (Experimental helicopter)
 * Sikorsky "Hoverfly" I (YR-4B/R-4B) (General Purpose helicopter)

Canada
In use for RCAF
 * Avro 671 "Rota" Mk.1 (La Cierva C.30A) (General Purpose Autogyro)
 * Sikorsky R-4B "Hoverfly" (General Purpose Helicopter)

Soviet Union
In use for Red Army and V-VS
 * TsAGI (Kamov) A-7/7bis (Liaison and Observation Autogyro)

Japan
In use by Japanese Army/Navy Air Service
 * KD-1a Kayaba KA-2 KA
 * Kayaba Ka-1