Siege artillery (also siege guns or siege cannons) are heavy guns designed to bombard fortifications, cities, and other fixed targets. They are distinct from field artillery and are a class of siege weapon capable of firing heavy cannonballs or shells that required enormous transport and logistical support to operate. They lacked mobility and thus were rarely useful in more mobile warfare situations, generally having been superseded by heavy howitzers (towed and self-propelled artillery), strategic bomber aircraft, surface-to-surface missiles, ballistic missiles, cruise missiles and multiple rocket launchers in modern warfare.

Muzzle-loading artillery Caliber (mm) Weapon name Country of origin Design 114 4.5-inch siege rifle 1862 121 Canon lourd de 12 Gribeauval 1775 134 Canon de 16 Gribeauval 1775 148 24-pdr M1839 rifle 1839 153 Canon de 24 Gribeauval 1775 163 32-pdr M1829 rifle 1829 178 42-pdr M1841 rifle 1841 200 Kartouwe 16th century 230 Abus Gun 16th century 650 Dardanelles Gun 1464 660 Dulle Griet First half of 15th century 735 Faule Mette 1411 820 Pumhart von Steyr Early 15th century 890 Tsar Cannon Tsardom of Russia 1586

Breech-loading artillery Caliber (mm) Weapon name Country of origin Design 88 9 cm Kanone C/79 1879– World War I 107 42-line siege gun M1877 Russo-Japanese War 120 12-cm Kanone M 80 World War I 120 Canon de 120 mm modèle 1878 World War I, World War II 120 12 cm Kanone C/80 World War I 120 Obusier de 120 mm modèle 1890 World War I 149.1 15 cm Kanone M 80 World War I 149.1 15 cm Ring Kanone C/72 World War I 149.1 15 cm Ring Kanone C/92 World War I 149.1 15 cm Ring Kanone L/30 World War I 149.1 Type 96 15 cm cannon World War II 149.7 15 cm Mörser M1881 World War I 150 Obusier de 15 cm TR Schneider-Canet-du-Bocage / World War I 152.4 6 inch siege gun M1877 World War I 152.5 BLC 6 inch siege gun 1902–1915 152.4 6 inch siege gun M1904 World War I 152.4 152 mm siege gun M1910 World War I 152.4 Cannone da 152/45 World War I, World War II 155 De Bange 155 mm cannon World War I 155 Obusier de 155 mm C modèle 1881 World War I 155 Obusier de 155 mm C modèle 1890 World War I 180 18 cm kurze Kanone M 80 World War I 203 8-inch mortar M1877 World War I 209 21 cm Mörser M1880 World War I 209 21 cm Haubitze M1891 World War I 210 210 mm M1894 World War I 210 210 mm gun M1939 (Br-17) World War II 210 Mortaio da 210/8 D.S. World War I, World War II 210 Mortaio da 210/9 modello 1914 World War I 210 Paris Gun World War I 220 Mortier de 220 mm modèle 1880 World War I 220 Skoda 220 mm howitzer World War II 229 9-inch mortar M1877 World War I 233 BL 9.2 inch Howitzer World War I 240 24 cm Mörser M 98 pre-World War I 240 24 cm Haubitze 39 World War II 240 Canon de 24 C modèle 1876 World War I 240 Canon de 240 L Mle 1884 World War I, World War II 240 Canon de 240 TR Mle 1903 World War I, World War II 240 24 cm Kanone M. 16 World War I, World War II 240 24 cm Kanone 3 World War II 240 Type 45 240 mm howitzer World War II 240 Type 96 24 cm howitzer World War II 260 Mortaio da 260/9 Modello 16 World War I, World War II 270 Mortier de 270 mm modèle 1885 World War I 270 Mortier de 270 mm modèle 1889 World War I, World War II 280 Obice da 280 World War I, World War II 280 Mortier 280 mm TR de Schneider sur affût-chenilles St Chamond World War II 280 28 cm howitzer L/10 Russo-Japanese War / World War I, World War II 280 11-inch mortar M1877 World War I 280 11-inch gun M1877 World War I 283 28 cm Haubitze L/12 World War I, World War II 283 28 cm Haubitze L/14 i.R. World War I 293 Mortier de 293 Danois sur affut-truck modèle 1914 World War I, World War II 305 BL 12 inch Howitzer World War I 305 Type 7 30 cm Howitzer World War II 305 Obice da 305/17 World War I 305 305 mm howitzer M1915 World War I 305 305 mm howitzer M1939 (Br-18) World War II 305 30.5 cm M. 11 (Škoda) World War I 305 30.5 cm M. 16 (Škoda) World War I, World War II 355 35.5 cm Haubitze M1 World War II 370 Mortier de 370 modèle 1914 Filloux World War I, World War II 380 38 cm Belagerungshaubitze M 16 World War I 381 BL 15 inch Howitzer World War I 420 42 cm Gamma Mörser World War I, World War II 420 Big Bertha World War I 420 42 cm Haubitze M. 14/16 World War I, World War II 540 Karl-Gerät 041 World War II 600 Karl-Gerät 040 World War II 800 Schwerer Gustav World War II

See also List of the largest cannon by caliber

References