+ Caliber (mm) Weapon name Country of origin Period 57 QF 6 pounder 10 cwt gun World War II 57 57 55 J 1950 - 1965 75 7.5 cm tornpjäs m/57 1962 - 2000 75 75mm 50 caliber Pattern 1892 World War I - World War II 76.2 QF 12 pounder 12 cwt World War I - World War II 76.2 Type 41 8 cm naval gun World War II 76.2 3-inch gun M1898, M1902, M1903 1899 - 1945 90 90 mm Gun M1/M2/M3 World War II 100 100 56 TK 1969 – 2012 100 Canon de 100 mm Modèle 1891 World War I - World War II 105 10.5 cm tornautomatpjäs m/50 Cold War 120 Canon de 120mm L mle 1931 World War II 120 4.7 inch gun World War I - World War II 120 12 cm tornautomatpjäs m/70 Cold War 120 12 cm mobile coastal artillery gun m/80 Cold War 120 120mm 45 caliber Pattern 1892 World War I - World War II 120 120 mm 50 caliber Pattern 1905 World War I - World War II 120 12 cm/45 3rd Year Type naval gun World War II 120 12 cm 11th Year Type naval gun World War II 120 Type 41 12 cm naval gun World War II 127 5-inch gun M1897 World War I 127 12.7 cm SK C/34 naval gun 1934 - 2003 127 5"/51 caliber gun World War I - World War II 130 130 mm/50 B13 Pattern 1936 World War II - Cold War 130 130 53 TK Cold War Modern 140 14 cm/50 3rd Year Type naval gun World War II 145 Canon de 145 L modele 1916 Saint-Chamond World War I - World War II 149.1 15 cm SK L/45 World War II 149.1 15 cm SK C/28 World War II 152 BL 6 inch Mk III, IV, VI 1880 - 1905 152 BL 6 inch gun Mk V Elswick export gun 1884 - 1945 152 BL 6 inch Mk VII naval gun World War I - World War II 152 6-inch gun M1897 1897 — 1945 152 6"/50 caliber gun World War II 152 6-inch siege gun M1877 World War I - World War II 152 6 inch 35 caliber naval gun 1877 1885 - 1917 152 152 mm 45 caliber Pattern 1892 World War I - World War II 152.4 Cannone da 152/45 World War I - World War II 152 Type 41 15 cm/40 naval gun World War II 152 15 cm/45 41st Year Type World War II 152 15 cm/50 41st Year Type World War II 155 Canon de 155 L modele 1916 Saint-Chamond World War I - World War II 155 155 mm gun M1918MI 1920 - 1945 155 155 mm gun M1/M2 World War II 177.8 RBL 7 inch Armstrong gun 1861 - ? 177.8 RML 7 inch gun 1865 - ? 180 180mm Pattern 1931-1933 World War II 194 Canon de 19 C modèle 1870/93 World War I - World War II 194 Canon de 19 C modèle 1875 World War I 203 8-inch converted rifle 1864 - 1905 203 8-inch mortar M1877 World War I 203 203mm 45 caliber Pattern 1892 World War I 203 203 mm 50 caliber Pattern 1905 World War I 203 BL 8 inch Mk VII naval gun disappearing gun 1885 - 1900 203 8-inch gun M1888 1895 - 1945 203 8-inch Navy gun MkVIM3A2 1941 - 1946 203 20.3 cm/45 Type 41 naval gun World War II 210 21 cm SK L/40 World War II 210 21 cm SK L/45 World War II 229 RML 9 inch Mk VI 1865 - 1922 229 9-inch mortar M1877 World War I 234 BL 9.2 inch Mk IX & X 1899 - 1956 240 24 cm SK L/40 World War I - World War II 240 Canon de 24 C modèle 1876 World War I 240 Canon de 240 modèle 93/96 TAZ World War I - World War II 254 BL 10 inch Mk I 1885 - 1913 254 10-inch gun M1895 1895 - 1945 254 254mm 45 caliber Pattern 1891 1897 - 1930 270 Mortier de 270 mm modèle 1889 World War I - World War II 280 Obice da 280 World War I - World War II 280 28 cm howitzer L/10 Russo-Japanese War / World War I / World War II 280 28 cm Küstenhaubitze 1890 - 1945 280 11-inch mortar M1877 World War I 280 11-inch gun M1877 World War I 280 28 cm MRK L/35 1892 - 1945 280 28 cm SK L/45 gun World War II 280 28 cm SK C/34 naval gun World War II - Cold War 305 Russian 12 inch 40 caliber naval gun 1896 - 1916 305 Obukhovskii 12"/52 Pattern 1907 gun 1914 - 1999 305 BL 12 inch naval gun Mk I – VII 1882 - 1920 305 Type 7 30 cm Howitzer 1918 - 1945 305 12-inch Mk VIII guns 1921 - 1926 305 Obice da 305/17 howitzer 1914 - 1959 305 12-inch coast defense mortar 1895 - 1945 305 12-inch gun M1895 1895 - 1945 305 30.5 cm SK L/50 gun 1909 - 1945 340 340mm/45 Modèle 1912 gun World War II 343 BL 13.5 inch naval gun Mk III disappearing gun World War I - World War II 343 BL 13.5-inch Mk V railway gun World War II 356 BL 14 inch Mk VII naval gun World War II 356 14-inch gun M1907 World War I - World War II 356 14-inch M1920 railway gun 1925 - 1946 380 380 mm/45 Modèle 1935 gun World War II 380 38 cm SK L/45 "Max" naval gun World War I 380 38 cm SK C/34 naval gun World War II 381 15-inch Rodman gun 1861 - 1905 381 Cannone navale da 381/40 World War I - World War II 381 38.1 cm/45 Model 1926 1926 - 2008 381 BL 15 inch Mk I naval gun 1915 - 1959 406 RML 16 inch 80 ton gun 1880 - 1902 406 16-inch gun M1895 World War I - World War II 406 16-inch gun M1919 1920 - 1945 406 16-inch howitzer M1920 1922 - 1945 406 16"/50 caliber Mark 2 gun 1920 - 1945 406 40.6 cm / SKC 34 Naval gun "Adolf Gun" World War II - Cold War 410 41 cm/45 3rd Year Type naval gun 1920 - 1945 450 RML 17.72 inch gun 1877 - 1906
See also List of the largest cannon by caliber