25 (Toronto) Field Ambulance (formerly 25 (Toronto) Medical Company) is a Canadian Forces Primary Reserve (militia) medical unit in Toronto, Ontario. The company-strength formation is part of 4 Health Services Group, which is headquartered in Montreal, Quebec. It is the only Primary Reserve medical unit in Toronto. The unit fields a medical company, a services support company, and an HQ element. The unit's name is often abbreviated to 25 Fd Amb.