Anti-aircraft cruiser

An anti-aircraft cruiser (AAC) is a type of cruiser, primarily equipped with universal main caliber guns designed for anti-aircraft defense (AA) of naval formations. These ships were built or planned for construction in the navies of several countries during the 1930s to 1950s. They were actively used in battles during World War II.

The term "anti-aircraft cruiser" was rarely used in official naval classifications, effectively only for the American Atlanta-class cruisers, but experts traditionally categorize a group of light cruiser types from the United Kingdom, United States, France, Italy, and other nations as anti-aircraft cruisers.

Advancements in jet aviation and aircraft weaponry rendered large and medium-caliber anti-aircraft artillery less effective. The role of air defense ships shifted to ships equipped with surface-to-air missile systems, such as guided missile cruisers and destroyers.