香港警察职级分为3级，即宪委级、督察级及员佐级，共15个职级，实际为13个职级。

Assistant Superintendent, or assistant superintendent of police (ASP), was a rank used by police forces in the British Empire. It was usually the lowest rank that could be held by a European officer, most of whom joined the police at this rank. In the 20th century, it was in many territories opened to non-Europeans as well. Today, this rank is found throughout The Commonwealth in police ranking structures including the UK's Scotland Yard and the Royal Canadian Mounted Police and Commonwealth Caribbean states. The rank is above inspector (chief inspector) and below superintendent.