John Stalker is a notable figure in the field of law enforcement, particularly known for his role as a police officer in the United Kingdom. He gained prominence in the 1980s when he was appointed as the Chief Constable of Greater Manchester Police. His leadership was marked by efforts to improve community relations and tackle crime effectively. Stalker is also recognized for his involvement in the controversial Stalker Inquiry, which investigated police actions during a shooting incident in Northern Ireland. His findings highlighted issues of police conduct and accountability, contributing to discussions about reform within law enforcement agencies.