List of prototype World War II combat vehicles

This list contains combat vehicles which never left the design phase or had an extremely limited production (usually < 10).

Australia

 * Australian Cruiser Tank Mark 3 "Thunderbolt"
 * Australian Cruiser Tank Mark 4
 * Rhino Heavy Armoured Car
 * Australian experimental light tank

Canada

 * Skink anti-aircraft tank

Germany

 * Entwicklung Series Entwicklung series, a comprehensive redesign of German armor from small tracked vehicles to a 100-ton super-heavy tank. Only a single E-100 chassis was completed
 * Leichttraktor, pre-war light tank, four built
 * Neubaufahrzeug, pre-war heavy tank design, five built
 * Panther II, development of the Panzerkampfwagen V "Panther". A single chassis was built
 * Panzerkampfwagen VII "Löwe", a super-heavy tank project that never reached prototype stage
 * Panzerkampfwagen VIII "Maus", a super-heavy tank. Two prototypes built
 * Panzerkampfwagen IX & Panzerkampfwagen X Paper project
 * Landkreuzer P. 1000 Ratte; paper project
 * Landkreuzer P. 1500 Monster; paper project
 * 12.8 cm Selbstfahrlafette auf VK 30.01(H) "Sturer Emil" - tank destroyer; 2 built
 * Heuschrecke 10, Krupp's design for a new self-propelled artillery gun
 * VK 3001 (P) - medium tank; paper project
 * VK 3002(DB) - prototype medium tank; one built
 * VK 4501 (P) - Porsche Tiger tank; 100 hulls built, 90 converted to Ferdinands, one Tiger (P) built, 3 Bergepanzer Tiger (p) and 3 Rammtigers built.
 * Dicker Max, two prototypes built
 * VK 20, medium tank proposed to replace the Panzer III and Panzer IV; paper project
 * Panzer-Selbstfahrlafette II, half-track tank destroyer; two built
 * Panzer-Selbstfahrlafette IV Ausf. C, SPG, 3 built
 * Geschützwagen Tiger, self-propelled artillery gun; one partial prototype built
 * VK 1602 Leopard, reconnaissance tank; paper project

Italy

 * Semovente da 20/70 quadruplo, self-propelled anti-aircraft gun
 * Semovente da 149/40, self-propelled gun
 * Fiat M16/43, fast medium tank
 * P43 heavy tank, Fiat Ansaldo's design for a new heavy tank.

Japan



 * Type 95 heavy tank; 4 built in 1934
 * Hi-Ro Sha 10 cm cannon self-propelled gun on Type 95 heavy tank chassis
 * Ji-Ro Type 92 10 cm cannon self-propelled gun on Type 95 heavy tank chassis
 * Type 97 Chi-Ni medium tank; one prototype built
 * Type 98 Chi-Ho medium tank; 4 built, two in 1940 and two in 1941
 * O-I super-heavy tank design in the 120-ton range. Exact stage of development unknown
 * Type 97 Ki-To SPAAG self-propelled anti-aircraft gun on Type 97 Te-Ke tankette chassis; one prototype built
 * Type 98 Ta-Se single 20 mm self-propelled anti-aircraft gun on a Type 98 Ke-Ni chassis
 * Type 98 20 mm AAG tank twin 20 mm self-propelled anti-aircraft gun on a Type 98 Ke-Ni chassis
 * ATG Carrier So-To; light armored transport with an AT Gun in Type 97 Te-Ke tankette structure
 * Type 3 Ke-Ri light tank; a few prototypes were produced
 * Type 2 Ku-Se 75 mm self-propelled gun on a Type 1 Chi-He chassis
 * Type 4 Chi-To medium tank; two completed and four chassis manufactured
 * Type 5 Chi-Ri medium tank; one incomplete prototype built
 * Type 5 Ke-Ho light tank; one prototype built
 * Type 4 Ho-To 12 cm self-propelled gun on a modified Type 95 Ha-Go chassis
 * Type 5 Ho-Ru 47 mm self-propelled gun; a light tank destroyer akin to the German Hetzer; one prototype built
 * Type 5 Na-To tank destroyer; two built
 * Type 5 To-Ku amphibious tank
 * Type 5 Ho-Ri tank destroyer with a 105 mm cannon and an additional 37 mm gun; exact status unknown
 * Naval 12 cm SPG; one prototype built with a mounted Type 10 120 mm gun on a Type 97 Chi-Ha chassis




 * Ka-To 105 mm SP AT gun was a combination of the Type 5 Na-To open top superstructure and the extended hull of the Type 4 Chi-To. Exact stage of development unknown
 * Type 5 15 cm SPG Ho-Chi; similar to Type 1 Ho-Ni I and Type 4 Ho-Ro SPGs, with a Type 96 15 cm (149.1 mm) howitzer mounted on a Type 97 chassis. Stage of development unknown
 * Type 97 Experimental flamethrower tank; incomplete prototypes. The first version replaced the hull machine gun with a flamethrower. The second version was fitted with two large, elongated fuel tanks and two flamethrowers on each side of the chassis. It utilized an electric flame igniter system.

New Zealand

 * Schofield tank
 * Bob Semple tank

Poland

 * 9TP light tank
 * 4TP (light) tank
 * 10TP tank
 * 14TP medium tank
 * 20/25TP medium tank
 * PZInż 130 amphibious tank
 * PZInż 152
 * PZInż 202
 * PZInż 222
 * PZInż 303
 * PZInż 342
 * PZInż 603
 * TKW (light) reconnaissance tank
 * TKS-D light tank destroyer

Romania

 * Mareșal tank destroyer
 * TACAM T-38

Spain

 * Verdeja

Soviet Union

 * Antonov A-40
 * T-43 medium tank
 * SMK tank heavy tank; one built
 * T-100 tank heavy tank
 * SU-100Y Self-Propelled Gun 130mm gun on the T-100 chassis
 * SU-14 heavy self-propelled gun on a T-35 chassis
 * PPG tankette
 * KV-3
 * KV-4 super-heavy tank; paper project
 * KV-5
 * KV-9
 * KV-10
 * KV-11
 * KV-12
 * KV-13 Three prototypes built.

United Kingdom

 * Tank, Heavy, TOG I
 * Tank Heavy, TOG II
 * Tank, Heavy Assault, Excelsior (A33)
 * Tank, Infantry, Valiant (A38)
 * Tank, Heavy Assault, Tortoise (A39)
 * Tank, Infantry, Black Prince (A43)
 * A20 heavy tank
 * Alecto

United States

 * M6 heavy tank
 * M7 Medium Tank
 * M38 Wolfhound
 * T14 Heavy Tank
 * T18 Howitzer Motor Carriage; 75 mm howitzer on a M3 chassis
 * T20 Medium Tank
 * T27 Armored Car
 * T28 Super Heavy Tank
 * T29 Heavy Tank
 * T30 Heavy Tank
 * T32 Heavy Tank
 * T34 Heavy Tank
 * T40/M9 Tank Destroyer
 * T54 Gun Motor Carriage
 * T55E1 Gun Motor Carriage
 * T82 Howitzer Motor Carriage
 * T84 Howitzer Motor Carriage
 * T88 Gun Motor Carriage; 105 mm howitzer on a M18 chassis
 * T92 Howitzer Motor Carriage