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 for the US Navy *Driggs-Schroeder Marks II and III and Driggs-Seabury M1898 and M1900 57 mm guns on mobile mounts, used by the US Army circa 1890–1920 * QF 6 pounder 6 cwt Hotchkiss, a British 57 mm tank gun of 1917 * QF 6 pounder Nordenfelt, a 57 mm naval gun of the 1880s very similar to the Hotchkiss * Ordnance QF 6-pounder, 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), Soviet 57×480 mmR AT gun, also used on the ZiS-30 * 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 Older types include: * 5.7 cm Maxim-Nordenfelt, short fortress gun of the 1880s

Guns denoted by calibre

See also