Hockey is Canada's National Winter Sport. Lacrosse is Canada's National Summer Sport. Lacrosse was first declared the National Game of Canada in 1859. In 1994 Parliament passed the Canada's National Sport Act which declared lacrosse to be "Canada's National Summer Sport", with hockey as the national winter sport.

Lacrosse is a contact team sport played between two teams using a small rubber ball (62.8-64.77 mm, 140-147 g) and a long-handled stick called a crosse or lacrosse stick. It is often considered as a rough sport, although injuries are less frequent than in American football and other contact sports. The head of the lacrosse stick is strung with loose mesh designed to catch and hold the lacrosse ball. Offensively, the objective of the game is to score by shooting the ball into an opponent's goal, using the lacrosse stick to catch, cradle, and pass the ball to do so. Defensively, the objective is to keep the opposing team from scoring and to gain the ball through the use of stick checking and body contact or positioning.

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