23 mm caliber

23 mm caliber may refer to:

• 23x152 mm caliber, used on Ilyushin Il-2 attack plane as well as on later Soviet anti-aircraft guns
• 23x115 mm caliber, used on many Soviet and Russian airplanes

See also

• 12.7 × 99 mm
• 12.7 × 108 mm
• 14.5 × 114 mm
• 20 mm caliber
• 25 × 137 mm
• 40 mm grenade
• Bofors 40 mm gun
• Caliber
• List of cartridges (weaponry), pistol and rifle