Acropora irregularis is a species of acroporid coral found in the northern and southwestern Indian Ocean, the Solomon Islands, the central Indo-Pacific, the East China Sea, and Japan. It is also found in the Mariana Islands and Palau. It occurs in tropical shallow reefs that are exposed to the action of strong waves, at depths of between 1 and 15 metres (3 ft 3 in and 49 ft 3 in). It could be synonymous with Acropora abrotanoides.