List of naval anti-aircraft guns

Twin Bofors 40mm guns

Naval anti-aircraft guns include anti-aircraft guns specially designed or adapted for mounting on ships, and naval guns adapted for high-angle fire.

Caliber (mm)  | Number of barrels  | Weapon name  | Country of origin  | Period

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20  | 1 or 2  | Oerlikon 20 mm cannon |  Switzerland | World War II
20  | 4  | Flakvierling 38 cannon |  Nazi Germany | World War II
25  | 1, 2, or 3  | Type 96 25 mm AT/AA Gun |  Empire of Japan | World War II
28  | 4  | 1.1"/75 (28mm) gun |  United States | World War II
37  | 2  | 3.7 cm SK C/30 |  Nazi Germany | World War II
40  | 1, 4, or 8  | QF 2 pdr Mk II, Mk VIII Vickers 2-pounder "pom-pom"  |  United Kingdom | World War I World War II
40  | 1, 2, or 4  | Bofors 40 mm gun |  Sweden | World War II \- Korean War \- Cold War
45  | 1 or 2  | 45 mm anti-aircraft gun (21-K) |  Soviet Union | World War II
76.2  |  | QF 3 inch 20 cwt |  United Kingdom | World War I
76.2  |  | 3"/23 caliber gun |  United States | World War I \- 1920s
76.2  | 1 or 2  | 3"/50 caliber gun |  United States | World War I \- World War II \- Cold War
76.2  | 2  | 3"/70 Mark 26 gun |  United States  United Kingdom | Cold War
100  | 2  | 10 cm/65 Type 98 naval gun |  Empire of Japan | World War II
102  |  | QF 4 inch Mk V naval gun |  United Kingdom | World War I World War II
102  | 1 or 2  | QF 4 inch Mk XVI naval gun |  United Kingdom | World War II \- Cold War
105  | 2  | 10.5 cm SK C/33 |  Nazi Germany | World War II
113  | 1 or 2  | QF 4.5 inch Mk I - V naval gun |  United Kingdom | World War II \- Cold War
120  |  | QF 4.7 inch Mk VIII naval gun |  United Kingdom | 1920s - World War II
120  | 2  | QF 4.7-inch Mk XI naval gun |  United Kingdom | World War II \- Cold War
120  | 1 or 2  | Type 10 120 mm AA Gun |  Empire of Japan | 1921 - World War II
127  |  | 5"/25 caliber gun |  United States | 1920s - World War II
127  | 2  | 12.7 cm/40 Type 89 naval gun |  Empire of Japan | 1932 - World War II
127  | 1 or 2  | 5"/38 caliber gun |  United States | 1934 - World War II \- Cold War
127  |  | 5"/54 caliber Mark 16 gun |  United States | Cold War \- Korean War
127  |  | 5"/54 caliber Mark 42 gun |  United States | Cold War \- Korean War \- Vietnam War
133  | 2  | QF 5.25 inch Mark I naval gun |  United Kingdom | World War II
152  | 2  | 6"/47 caliber Mark 16 gun |  United States | Cold War \- Korean War
152  | 2  | QF 6-inch Mark N5 gun |  United Kingdom | Cold War