Ornge (formerly Ontario Air Ambulance) - is the air ambulance and ground transportation service for the province of Ontario, Canada, and for the Ministry of Health and Long-Term Care (Ontario). 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.
The name Ornge is not an acronym, but is based on the colour orange of its aircraft and land ambulances. According to the organization, "The 'a' was removed from the name, partly to make people stop and take a second look, and also so that it could be trademarked."
In 2012 Ornge and its associated companies employed more than 400 people, including paramedics, pilots and aviation specialists. Ornge has its own aircraft and land ambulances, with 12 bases across Ontario. It also contracts some operations out to independent service providers.