Ornge (formerly Ontario Air Ambulance Corporation) is a Canadian not-for-profit corporation and registered charity that provides air ambulance and associated ground transportation services for the province of Ontario, under the direction of the province's Ministry of Health. The provision of ambulance services in Ontario is governed by the Ambulance Act, which states that the Minister of Health "has the duty and the power" to make sure Ontario is serviced by a "balanced and integrated system of ambulance services and communication services used in dispatching ambulances". Its headquarters are in Mississauga, Ontario, Canada.