6-pounder gun or 6-pdr, usually denotes a gun firing a projectile weighing approximately . Guns of this type include: *

QF 6 pounder Hotchkiss The Ordnance QF Hotchkiss 6 pounder gun Mk I and Mk II or QF 6 pounder 8 cwt were a family of long-lived light naval guns introduced in 1885 to defend against new, small and fast vessels such as torpedo boats and later submarines. Many variant ...

, a 57 mm naval gun of the 1880s; a similar weapon was designed by

Driggs-Schroeder Driggs-Schroeder was the name of several naval artillery, naval guns designed by US Navy officers William H. Driggs and Seaton Schroeder for the United States Navy in the late 1880s, fitted on ships built in the 1890s. Some Driggs-Schroeder weapon ...

for the US Navy *Driggs-Schroeder Marks II and III and

Driggs-Seabury Driggs-Seabury Ordnance Company was founded in 1897 by Driggs family, William H. Driggs and Samuel Seabury, both US Navy officers, in partnership with William's brother Louis Labadie "L. L." Driggs, originally to produce guns for the US Army and ...

M1898 and M1900 57 mm guns on mobile mounts, used by the US Army circa 1890–1920 *

QF 6 pounder 6 cwt Hotchkiss The Ordnance QF 6-pounder 6 cwt Hotchkiss Mk I and Mk II was a shortened version of the original QF 6 pounder Hotchkiss naval gun, and was developed specifically for use in the sponsons of the later marks of British tanks in World War I, from Ma ...

, a British 57 mm tank gun of 1917 *

QF 6 pounder Nordenfelt The QF 6 pounder Nordenfelt was a light 57 mm naval gun and coast defence gun of the late 19th century used by many countries. Note that this gun should not be confused with the short-barreled 57 mm Cockerill-Nordenfelt "Canon de capon ...

, a 57 mm naval gun of the 1880s very similar to the Hotchkiss *

Ordnance QF 6-pounder The Ordnance quick-firing 6-pounder 7 cwt,British forces traditionally denoted smaller ordnance by the weight of its standard projectile, in this case approximately . The approximate weight of the gun barrel and breech, "7 cwt" (cwt = hundredwe ...

, a British 57 mm anti-tank and tank gun of World War II * QF 6 pounder 10 cwt gun, a British twin mount naval and coast defence gun 1937–1956. Older types include: * Canon de 6 système An XI, a French 6-pounder muzzle-loading cannon of the Napoleonic era * M1841 6-pounder field gun, an American 6-pounder smoothbore muzzle-loading cannon of the mid-1800s

Guns denoted by calibre

Examples simply referred to by caliber include: * Bofors 57 mm gun family, including a World War II field antitank gun, a World War II 57 mm × 230 mm aircraft autocannon, and a still-current family of three 57 mm x 438 mm naval artillery gun/anti air autocannons * 57 55 J, Finnish light coastal gun *

57 mm anti-tank gun M1943 (ZiS-2) The ZiS-2 () (GRAU index: 52-P-271) is a Soviet 57 mm anti-tank gun used during World War II. The ZiS-4 is a version of the gun that was meant to be installed in tanks. ''ZiS'' stands for ''Zavod imeni Stalina'' (Russian ''Завод им� ...

, Soviet 57×480 mmR AT gun, also used on the

ZiS-30 The ZiS-30 was a light self-propelled anti-tank gun built for the Soviet Red Army in 1941. It was based on the Komsomolets armoured artillery tractor. They were successful vehicles, but production was limited by the number of Komsomolets tract ...

* Ho-401 cannon, Japanese prototype aircraft autocannon * Type 90 57 mm tank gun, Japanese tank cannon * Type 97 57 mm tank gun, Japanese tank cannon *Ch-51(M), used on the Soviet assault gun

ASU-57 The ASU-57 was a small, lightly constructed Soviet Union, Soviet assault gun specifically designed for use by Soviet Airborne Forces, Soviet airborne divisions. From 1960 onwards, it was gradually phased out in favour of the ASU-85. Development ...

* AZP S-60, Soviet 57×347mmSR AA autocannon, also integrated into

ZSU-57-2 The ZSU-57-2 Ob'yekt 500 is a Soviet Union, Soviet self-propelled anti-aircraft gun (SPAAG), armed with two 57 mm autocannons. 'ZSU' stands for ''Zenitnaya Samokhodnaya Ustanovka'' (), meaning "anti-aircraft self-propelled mount", '57' stand ...

Older types include: * 5.7 cm Maxim-Nordenfelt, short fortress gun of the 1880s

Guns denoted by calibre

See also