37mm gun

37mm gun or 3.7 cm gun can refer to several weapons or weapons systems. The "37mm" refers to the inside diameter of the barrel of the gun, and therefore the diameter of the projectile it fires. However, the overall size and power of the gun itself can vary greatly between different weapons, in spite of them all being called "37mm" guns.

• The 37mm version of the Maxim gun used by both sides during World War I
  • QF 1 pounder pom-pom, the British version
• 37-mm air-defense gun M1939 (61-K), a Soviet anti-aircraft gun
• 37mm Gun M3, an American World War II anti-tank gun
• 3.7 cm FlaK 43, a German gun
• 3.7 cm PaK 36, a German World War II gun
• Bofors 37 mm, a Swedish designed anti-tank gun
• Canon d'Infanterie de 37 modèle 1916 TRP, a French World War I gun; In US WWI service known as the 37mm M1916
• Milkor Stopper 37/38 mm riot gun, a riot gun
• Puteaux SA 18, a French semi-automatic gun mounted on armored vehicles and in bunkers used during and after World War I
• Skoda 37 mm A7, a Czech World War II gun
• Skoda 37 mm Model 1934, a World War II gun
• Skoda 37 mm Model 1937, a World War II gun
• Type 11 37 mm Infantry Gun, a World War II Japanese infantry support gun
• Type 1 37 mm Anti-Tank Gun, a World War II Japanese anti-tank gun
• 37-mm trench gun M1915, a World War I Russian gun
• Nudelman N-37, a Soviet auto-cannon
• 37 mm flare, civilian variant of the 40 mm grenade system