The Hong Kong Air Cadet Corps is a voluntary uniformed group subsidised by the Home Affairs Bureau of the Hong Kong government and is registered under the Societies Ordinance as a non-profit making charitable organisation.

Cadets or cadet corps are voluntary youth programs sponsored by a national military service or ministry of defence. These programs are aimed to provide youths with activities associated with military or paramilitary training, including drills, physical fitness, and education. Although these youth organisations are modelled after their sponsoring military service, they do not form a part of these services nor do they constitute a military service in their own right.