Ice hockey (or simply hockey) is a team sport played on ice skates, usually on an ice skating rink with lines and markings specific to the sport. It belongs to a family of sports called hockey. In ice hockey, two opposing teams use ice hockey sticks to control, advance and shoot a closed, vulcanized, rubber disc called a "puck" into the other team's goal. Each goal is worth one point. The team which scores the most goals is declared the winner. In a formal game, each team has six skaters on the ice at a time, barring any penalties, one of whom is the goaltender. Ice hockey is a full contact sport.

Ice hockey is one of the sports featured in the Winter Olympics while its premiere international amateur competition, the IIHF World Championships, are governed by the International Ice Hockey Federation (IIHF) for both men's and women's competitions. Ice hockey is also played as a professional sport.

In North America as well as many European countries, the sport is known simply as hockey. However, in other countries, "hockey" usually refers to field hockey. In 1994 hockey was officially recognized as Canada's national winter sport.The modern sport of ice hockey was developed in Canada, most notably in Montreal, where the first indoor game was played on March 3, 1875. Some characteristics of that game, such as the length of the ice rink and the use of a puck, have been retained to this day. Amateur ice hockey leagues began in the 1880s, and professional ice hockey originated around 1900. The Stanley Cup, emblematic of ice hockey club supremacy, was initially commissioned in 1892 as the "Dominion Hockey Challenge Cup" and was first awarded in 1893 to recognize the Canadian amateur champion and later became the championship trophy of the National Hockey League (NHL). In the early 1900s, the Canadian rules were adopted by the Ligue Internationale de Hockey Sur Glace, in Paris, France, the precursor of the International Ice Hockey Federation. The sport was played for the first time at the Olympics during the 1920 Summer Olympics.

While women also played during the game's early formative years, it was not until organizers began to officially remove body checking from female ice hockey beginning in the mid-1980s that it began to gain greater popularity, which by then had spread to Europe and a variety of other countries. The first IIHF Women's World Championship was held in 1990, and women's play was introduced into the Olympics in 1998.

Joseph Henri Maurice "Rocket" Richard (; French: [ʁiʃaʁ]; August 4, 1921 – May 27, 2000) was a Canadian professional ice hockey player who played 18 seasons in the National Hockey League (NHL) for the Montreal Canadiens. He was the first player in NHL history to score 50 goals in one season, accomplishing the feat in 50 games in 1944–45, and the first to reach 500 career goals. Richard retired in 1960 as the league's all-time leader in goals with 544. He won the Hart Trophy as the NHL's most valuable player in 1947, played in 13 All-Star Games and was named to 14 post-season NHL All-Star Teams, eight on the First-Team. In 2017 Richard was named one of the 100 Greatest NHL Players in history. His younger brother Henri also played his entire career with the Canadiens, the two as teammates for Maurice's last five years. A centre nicknamed the "Pocket Rocket", Henri is enshrined alongside Maurice in the Hockey Hall of Fame.

Richard, Elmer Lach and Toe Blake formed the "Punch line", a high-scoring forward line of the 1940s. Richard was a member of eight Stanley Cup championship teams, including a league record five straight between 1956 and 1960; he was the team's captain for the last four. The Hall of Fame waived its five-year waiting period for eligibility and inducted Richard in 1961. In 1975 he was inducted into Canada's Sports Hall of Fame. The Canadiens retired his number, 9, in 1960, and in 1999 donated the Maurice "Rocket" Richard Trophy to the NHL, awarded annually to the league's regular season leading goal-scorer.

The oldest of eight children, Richard emerged from a poverty-stricken family during the Great Depression. He was initially viewed as a fragile player. A string of injuries prevented him from joining the Canadian military during the Second World War. Intense, he was renowned for his physical and occasionally violent style of play. Richard was involved in a vicious on-ice incident late in the 1954–55 season during which he struck a linesman. NHL President Clarence Campbell suspended him for the remainder of the season and playoffs, which precipitated the Richard Riot in Montreal. The riot has taken on a mythical quality in the decades since and is often viewed as a precursor to Quebec's Quiet Revolution. Richard was a cultural icon among Quebec's francophone population; his legend is a primary motif in Roch Carrier's short story The Hockey Sweater, an emblematic work of Canadian culture. In 1998, Richard was diagnosed with abdominal cancer and died from the disease two years later. He became the first non-politician honoured by the province of Quebec with a state funeral.