Cecil Charles Hudson Moriarty, CBE, CStJ (1877–1958) was an Irish-born British police officer and Irish rugby international. He won one cap against Wales in 1899. He served as Chief Constable of the Birmingham City Police from 1935 to 1941, and his manuals and books on police procedures became essential guidebooks for police in the United Kingdom. Moriarty wrote several books and papers on police procedures, notably Moriarty's Police Law (1929), which for more than half a century was a fundamental resource for law enforcement officials in the UK.