List of tank main guns

This is a list of tank main guns which are the primary weapon of combat for either a light, medium or heavy tank. Many tanks have other weapons installed in them such as machine guns, autocannons and small calibre mortars. The list does not include weapons installed in self-propelled artillery vehicles such as assault guns or tank destroyers that usually lack turrets. This is due to the unique nature of turreted tank tactics, its design and operation.

Caliber (mm)	Weapon name	Country of origin	Period
20	TNSh	Soviet Union	World War II
25	25 SA 35	France	World War II
37	3.7 cm UV vzor 34 (Škoda A3a)	Czechoslovakia	World War II
37	3.7 cm UV vzor 38 (Škoda A7)	Czechoslovakia	World War II
37	PS-1	Soviet Union	1930s
37	PS-2 Model 1930	Soviet Union	1930s
37	B-3 Model 1930	Soviet Union	1930s
37	37 SA 18	France	World War I / World War II
37	37 SA 38	France	World War II
37	37mm Gun M5/M6	United States	World War II
40	QF 2 pounder	United Kingdom	World War II
45	20K/Model 32/35/38	Soviet Union	1930s / World War II
47	OQF 3 pounder gun Vickers Medium tanks	United Kingdom	1920s-1930s
47	47 SA 34	France	pre-World War II
47	47 SA 35	France	World War II
57	QF 6 pounder Hotchkiss	France	World War I
57	QF 6 pounder 6 cwt Hotchkiss	United Kingdom	World War I
57	Cockerill-Nordenfelt "Canon de caponnière" A7V's gun	Belgium	World War I
57	QF 6 pounder 7 cwt	United Kingdom	World War II
57	ZiS-4	Soviet Union	World War II
75	75 SA 35	France	World War II
75	7.5 cm KwK 37	Nazi Germany	World War II
75	Ordnance QF 75 mm	United Kingdom	World War II
75	7.5 cm KwK 40	Nazi Germany	World War II
75	7.5 cm KwK 42	Nazi Germany	World War II
75	75mm Gun M2/M3/M6	United States	World War II
76.2	Ordnance QF 3 inch howitzer	United Kingdom	World War II
76.2	Ordnance QF 17 pounder	United Kingdom	World War II
76.2	77 mm HV	United Kingdom	World War II
76.2	Model 27/32 howitzer	Soviet Union	1930s
76.2	L-10	Soviet Union	1930s
76.2	L-11	Soviet Union	World War II
76.2	F-32	Soviet Union	World War II
76.2	F-34/ZiS-5	Soviet Union	World War II
76.2	D-56T	Soviet Union	Cold War
76.2	76mm Gun M1	United States	World War II
76.2	3in Gun M7	United States	World War II
84	Ordnance QF 20 pounder	United Kingdom	Cold War
85	D-5T	Soviet Union	World War II
85	ZiS-S-53	Soviet Union	World War II
88	KwK 36	Nazi Germany	World War II
88	KwK 43 L71	Nazi Germany	World War II
90	90mm Gun M3	United States	World War II
95	Ordnance QF 32 pounder	United Kingdom	World War II
100	D-10T	Soviet Union	World War II / Cold War
105	105mm Howitzer M4	United States	World War II
105	L7	United Kingdom	Cold War
105	Rheinmetall LTA2	Germany	Cold War
115	U-5TS/2A20	Soviet Union	Cold War
120	Rheinmetall L44/M256	Germany	Cold War
120	Rheinmetall L55	Germany	Modern
120	MG251/MG253	Israel	Cold War
120	L11A5	United Kingdom	Cold War
120	L30	United Kingdom	Cold War
120	KBM2	United Kingdom	Modern
122	D-25T	Soviet Union	World War II
125	D-81T/Sprut anti-tank gun	Soviet Union	Cold War
125	KBA3	Ukraine	Modern