Sir Ronald Flanagan (born 25 March 1949) is a retired senior Northern Irish police officer. He was the Home Office Chief Inspector of Constabulary for the United Kingdom excluding Scotland. Sir Ronnie was previously the Chief Constable of the Police Service of Northern Ireland (PSNI) since its creation in 2001 to 2002, and had been Chief Constable of its predecessor, the Royal Ulster Constabulary (RUC) until 2001.