This is a list of tank main guns which are the primary weapon of combat for either a light

Light tank

A light tank is a tank variant initially designed for rapid movement, and now primarily employed in low-intensity conflict. Early light tanks were generally armed and armored similar to an armored car, but used tracks in order to provide better cross-country mobility.The light tank was a major...

, medium

Medium tank

Medium tank was a classification of tanks; the medium being intermediate in size and weight and armament between heavy tanks and light tanks.The medium tank concept has been eclipsed by the main battle tank.-History:...

 or heavy tank

Heavy tank

A heavy tank was a subset of tank that filled the heavy direct-fire role of many armies.Heavy tanks have usually been deployed to breakthrough enemy lines, though in practice have been more useful in the defensive role than in the attack...

. Many tanks have other weapons installed in them such as machine gun

Machine gun

A machine gun is a fully automatic mounted or portable firearm, usually designed to fire rounds in quick succession from an ammunition belt or large-capacity magazine, typically at a rate of several hundred rounds per minute....

s, autocannon

Autocannon

An autocannon or automatic cannon is a rapid-fire projectile weapon firing a shell as opposed to the bullet fired by a machine gun. Autocannons often have a larger caliber than a machine gun . Usually, autocannons are smaller than a field gun or other artillery, and are mechanically loaded for a...

s and small calibre mortar

Mortar (weapon)

A mortar is an indirect fire weapon that fires explosive projectiles known as bombs at low velocities, short ranges, and high-arcing ballistic trajectories. It is typically muzzle-loading and has a barrel length less than 15 times its caliber....

s. The list does not include weapons installed in self-propelled artillery

Self-propelled artillery

Self-propelled artillery vehicles are combat vehicles armed with artillery. Within the term are covered self-propelled guns and rocket artillery...

 vehicles such as assault gun

Assault gun

An assault gun is a gun or howitzer mounted on a motor vehicle or armored chassis, designed for use in the direct fire role in support of infantry when attacking other infantry or fortified positions....

s or tank destroyer

Tank destroyer

A tank destroyer is a type of armored fighting vehicle armed with a gun or missile launcher, and is designed specifically to engage enemy armored vehicles...

s that usually lack turrets. This is due to the unique nature of turreted tank tactics

Military tactics

Military tactics, the science and art of organizing an army or an air force, are the techniques for using weapons or military units in combination for engaging and defeating an enemy in battle. Changes in philosophy and technology over time have been reflected in changes to military tactics. In...

, its design and operation.

Caliber Caliber In guns including firearms, caliber or calibre is the approximate internal diameter of the barrel in relation to the diameter of the projectile used in it....  (mm)	Weapon name	Country of origin	Period
20	TNSh		World War II
25	25 SA 35 25 mm Hotchkiss anti-tank gun The 25 mm Hotchkiss anti-tank gun was a French anti-tank gun that saw service in the first years of the Second World War.-Development:...		World War II
37	3.7 cm UV vzor 34 (Škoda A3a) Skoda 37 mm Model 1934 The 3.7 cm kanon P.Ú.V. vz. 34 was a anti-tank gun produced by the Škoda Works in Czechoslovakia. Škoda's own designation for it was A3. It is not known if guns seized by German after the occupation of Bohemia-Moravia saw service in World War II. Slovakia acquired 113 when it declared independence...		World War II
37	3.7 cm UV vzor 38 (Škoda A7) Skoda 37 mm A7 The Škoda A7 was a 37 mm tank gun designed by the Skoda Works in Czechoslovakia prior to World War II.The gun was the primary armament of the Czech TNH-PS light tank design, known in service with Germany as the Panzer 38....		World War II
37	PS-1		1930s
37	PS-2 Model 1930		1930s
37	B-3 Model 1930 37 mm anti-tank gun M1930 (1-K) 37-mm anti-tank gun model 1930 was a Soviet light anti-tank gun used in the first stage of the German-Soviet War.-Description:1-K was a Soviet anti-tank gun initially developed by the German company Rheinmetall. The gun was closely related to the German PaK 35/36...		1930s
37	37 SA 18		World War I / World War II
37	37 SA 38		World War II
37	37mm Gun M5/M6		World War II
40	QF 2 pounder Ordnance QF 2 pounder The Ordnance QF 2-pounder was a British anti-tank and vehicle-mounted gun, employed in the Second World War. It was actively used in the Battle of France, and during the North Africa campaign...		World War II
45	20K/Model 32/35/38		1930s / World War II
47	OQF 3 pounder gun OQF 3 pounder gun The Ordnance QF 3 pounder gun was a British tank gun mounted on Vickers Medium Tanks in the 1920s and 1930s. The gun was produced in 32 calibre and 40 calibre versions.-References:* Anthony G Williams,...  Vickers Medium tanks		1920s-1930s
47	47 SA 34		pre-World War II
47	47 SA 35		World War II
57	QF 6 pounder Hotchkiss QF 6 pounder Hotchkiss The QF 6 pounder Hotchkiss was a light 57 mm naval gun and coast defence gun of the late 19th century used by many countries, and was adapted for use in the early British tanks in World War I.- Canada History :...		World War I
57	QF 6 pounder 6 cwt Hotchkiss QF 6 pounder 6 cwt Hotchkiss The Ordnance QF 6 pounder 6 cwt Hotchkiss Mk 1 and Mk 2 was a shortened version of the original QF 6 pounder Hotchkiss, and was developed specifically for use in the sponsons of the later Marks of British tanks in World War I, from Mark IV onwards.-History:...		World War I
57	Cockerill-Nordenfelt "Canon de caponnière" A7V A7V The A7V was a tank introduced by Germany in 1918, near the end of World War I. One hundred vehicles were ordered during the spring of 1918, but only 21 were delivered. It was nicknamed "The Moving Fortress" by the British because of the shape of the hull... 's gun		World War I World War I World War I , which was predominantly called the World War or the Great War from its occurrence until 1939, and the First World War or World War I thereafter, was a major war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918...
57	QF 6 pounder 7 cwt Ordnance QF 6 pounder The Ordnance Quick-Firing 6-pounder 7 cwt, or just 6 pounder, was a British 57 mm gun, their primary anti-tank gun during the middle of World War II, as well as the main armament for a number of armoured fighting vehicles...		World War II
57	ZiS-4		World War II
75	75 SA 35		World War II
75	7.5 cm KwK 37 7.5 cm KwK 37 The 7.5 cm KwK 37 L/24 was a German 75 mm tank gun used during World War II, primarily as the chief weapon of the Panzer IV tank....	Nazi Germany	World War II World War II World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...
75	Ordnance QF 75 mm Ordnance QF 75 mm The Ordnance QF 75 mm, abbreviated to OQF 75 mm, was a British tank-gun of the Second World War. It was used instead of the Ordnance QF 6 pounder , an anti-tank gun, to give better performance against infantry targets in a similar fashion to the 75 mm gun fitted to the American...		World War II World War II World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...
75	7.5 cm KwK 40 7.5 cm KwK 40 The 7.5 cm KwK 40 was a German 7.5 cm Second World War era vehicle mounted gun, used as the primary anti-tank weapon of the German medium tank the SdKfz.161 Panzerkampfwagen IV and the SdKfz.142 Sturmgeschütz III assault guns ...	Nazi Germany	World War II World War II World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...
75	7.5 cm KwK 42	Nazi Germany	World War II World War II World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...
75	75mm Gun M2/M3/M6 75 mm Gun (US) The US 75 mm gun tank gun M2 and the later M3 were the standard American tank guns of the Second World War.Besides use on the two main American medium tanks of the war the M3 Lee and the M4 Sherman . The lightweight M6 and M5 variants were developed to equip the Light Tank M24 and the B-25...		World War II
76.2	Ordnance QF 17 pounder Ordnance QF 17 pounder The Ordnance Quick-Firing 17 pounder was a 76.2 mm gun developed by the United Kingdom during World War II. It was used as an anti-tank gun on its own carriage, as well as equipping a number of British tanks. It was the most effective Allied anti-tank gun of the war...		World War II
76.2	77 mm HV		World War II
76.2	Model 27/32 howitzer		1930s
76.2	L-10		1930s
76.2	L-11		World War II
76.2	F-32		World War II
76.2	F-34 F-34 tank gun The 76 mm tank gun M1940 F-34 was a 76.2 mm Soviet tank gun used on the T-34/76 tank. A modified version of the gun, the 76 mm tank gun M1941 ZiS-5 was used on KV-1 tanks during World War II... /ZiS-5		World War II
76.2	D-56T		Cold War Cold War The Cold War was the continuing state from roughly 1946 to 1991 of political conflict, military tension, proxy wars, and economic competition between the Communist World—primarily the Soviet Union and its satellite states and allies—and the powers of the Western world, primarily the United States...
76.2	76mm Gun M1 76 mm gun M1 The 76 mm Gun M1 was an American Forces World War II-era tank gun, which replaced the 75 mm gun on late Medium tank M4s, and was used for all 76 mm Gun Motor Carriage M18 tank destroyers. The previous 75 mm M3 L/40 gun on the early M4 Sherman variants was designed more as an infantry support...		World War II
76.2	3in Gun M7 3-inch M1918 gun The 3-inch M1918 gun was a United States 3-inch anti-aircraft gun that entered service in 1918 and served until it was finally superseded by the 90 mm M3 gun just prior to the opening of World War II...		World War II
84	Ordnance QF 20 pounder Ordnance QF 20 pounder The Ordnance QF 20 pounder was a British 84 mm tank gun introduced in 1948 and used in the Centurion tank and the Charioteer tank destroyer...		Cold War
85	D-5T		World War II
85	ZiS-S-53		World War II
88	KwK 36 KwK 36 The 8.8 cm KwK 36 L/56 was an 8.8 cm electrically fired tank gun used by the German Wehrmacht, during World War II. This was the primary weapon of the Pzkw VI Tiger I tank. It was developed and built by Krupp.-Design:...	Nazi Germany	World War II
88	KwK 43 L71	Nazi Germany	World War II
90	90mm Gun M3 90 mm gun The American 90 mm family of guns served as primary heavy anti-aircraft and anti-tank guns, playing a role similar to the renowned German 88 mm gun. They were the US's primary anti-aircraft guns from just prior to the opening of World War II into the 1950s when most AAA was replaced by missile...		World War II
95	Ordnance QF 32 pounder Ordnance QF 32 pounder The Ordnance QF 32 pounder or ' was a British 94 mm gun, developed as a replacement for the Ordnance QF 17 pounder anti tank and tank gun....		World War II
100	D-10T D-10 tank gun The D-10 is a Soviet antitank gun developed in late World War II, and installed in tank destroyers and tanks. Versions of the 100 mm gun were installed on new T-55 tanks as late as 1979, and continue to be in active service in many countries.- History :...		World War II / Cold War
105	105mm Howitzer M4 M101 howitzer The 105 mm M2A1 howitzer was the standard light field howitzer for the United States in World War II, seeing action in both European and Pacific theaters. Entering production in 1941, it quickly entered the war against the Imperial Japanese Army in the Pacific, where it gained a reputation...		World War II
105	L7 Royal Ordnance L7 The Royal Ordnance L7 is the basic model of Britain's most successful tank gun. The L7 was a 105 mm L/52 rifled design intended for use in armoured fighting vehicles...		Cold War
105	Rheinmetall LTA2 Rheinmetall LTA2 Rheinmetall LTA2 is a 105 mm tank gun produced by the Rheinmetall firm of Germany.-See also:* List of artillery* Germany...		Cold War
115	U-5TS/2A20		Cold War
120	Rheinmetall L44 Rheinmetall L44 The Rheinmetall 120 mm gun is a smoothbore tank gun designed and produced by the West German Rheinmetall-DeTec AG company, developed in response to Soviet advances in armor technology and development of new armored threats... /M256		Cold War
120	Rheinmetall L55		Modern
120	MG251/MG253 IMI 120 mm gun The IMI 120 mm gun is a smoothbore tank gun designed and produced by the Israeli Military Industries company. It is widely confused as a licensed production of the Rheinmetall L44 tank gun, however developed by Israeli Military Industries from 1983 to 1988, to meet the requirements of the...		Cold War
120	L11A5 Royal Ordnance L11A5 The Royal Ordnance L11A5 is a 120 mm L/55 rifled tank gun design. It was the first of NATO's 120mm tank guns which became the standard calibre for Western tanks in the later period of the Cold War...		Cold War
120	L30 L30 The L30 is a 120mm tank gun used by the British Army and Royal Army of Oman. It is fitted in the turret of the Challenger 2 main battle tank. It is an improved production model of the Royal Ordnance L11 series of rifled tank guns.-Challenger Armament:...		Cold War
120	KBM2		Modern
122	D-25T		World War II
125	D-81T/2A46		Cold War
125	KBA3		Modern