The Sûreté du Québec (French: [syʁte dy kebɛk], English: Quebec Security), abbreviated SQ, is the provincial police service for the Canadian province of Quebec. No official English name exists, but the agency's name is sometimes translated to "Quebec Provincial Police" in English-language sources. The headquarters of the Sûreté du Québec are located on Parthenais Street in the city's downtown core of Montreal and the service employs roughly 5,500 officers. SQ is the second largest provincial service (behind the Ontario Provincial Police) and fourth largest service in Canada (behind the Royal Canadian Mounted Police, Toronto Police Service, and the Ontario Provincial Police).