Canuck is a slang term for a Canadian. The origins of the word are uncertain. The term Kanuck is first recorded in 1835 as an Americanism, originally referring to Dutch Canadians (which included German Canadians) or French Canadians. By the 1850s, the spelling with a "C" became predominant. Today, many Canadians and others use Canuck as a mostly affectionate term for any Canadian.

Johnny Canuck is a folklore hero who was created as a political cartoon in 1869 and was later re-invented as a Second World War action hero in 1942. The Vancouver Canucks, a professional ice hockey team in the National Hockey League (NHL) has used a version of "Johnny Canuck" as their team logos.

The Canadian military has used the term colloquially for several projects: Operation Canuck, the Avro Canada CF-100 Canuck and the Fleet 80 Canuck.

Captain Canuck is a Canadian comic book superhero who first appeared in Captain Canuck #1 (July 1975). The series was the first successful Canadian comic book since the collapse of the nation's comic book industry following World War II.