# 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
* 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
* Type 1 Ho-I infantry support gun tank; one prototype built
* ATG Carrier So-To; light armored transport with an AT Gun in a Type 97 Te-Ke tankette structure
* Type 3 Ke-Ri light tank; a few prototypes were produced
* Special number 3 light tank Ku-Ro; only a prototype mock-up was completed
* Experimental Type 97 Chi-Yu mine flail tank; one prototype built
* Experimental Type 97 mine clearing tank GS; one prototype built
* Type 97 Experimental flamethrower tank; two 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.
* 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 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 Ke-Ho light tank; one prototype built
* 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 5 Na-To tank destroyer; two built
* Type 5 To-Ku amphibious tank
* Naval 12 cm SPG; one prototype built with a mounted Type 10 120 mm gun on a Type 97 Chi-Ha chassis
* Experimental anti-aircraft tank Ta-Ha; incomplete prototype on a Type 1 Chi-He 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 Ho-Ri tank destroyer with a 105 mm cannon and an additional 37 mm gun; exact status 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

## 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