The Canadian Armed Forces (CAF; French: Forces armées canadiennes, FAC) are the unified military forces of Canada, including land, sea, and air commands referred to as the Royal Canadian Navy, Canadian Army, and the Royal Canadian Air Force. The CAF also operates several other commands, including the Canadian Forces Intelligence Command, the Canadian Joint Operations Command, and the Canadian Special Operations Forces Command. Personnel may belong to either the Regular Force or the Reserve Force, which has four sub-components: the Primary Reserve, Supplementary Reserve, Cadet Organizations Administration and Training Service, and the Canadian Rangers. Under the National Defence Act, the Canadian Armed Forces are an entity separate and distinct from the Department of National Defence (the federal government department responsible for the administration and formation of defence policy), which also exists as the civilian support system for the forces.

Canada's peacekeeping role during the 20th century has played a major role in its positive global image. Canada has long been reluctant to participate in military operations that are not sanctioned by the United Nations (UN), such as the Vietnam War or the 2003 invasion of Iraq. Since the 21st century, Canadian direct participation in UN peacekeeping efforts greatly declined, with its military participation reallocated to UN-sanctioned operations through the North Atlantic Treaty Organization (NATO).