Wayne Douglas Gretzky (born January 26, 1961) is a Canadian former professional ice hockey player and former head coach. He played 20 seasons in the National Hockey League (NHL) for four teams from 1979 to 1999. Nicknamed "The Great One", he has been called "the greatest hockey player ever" by many sportswriters, players, and the league itself. Gretzky is the leading scorer in NHL history, with more goals and assists than any other player. He garnered more assists than any other player scored total points, and is the only NHL player to total over 200 points in one season – a feat he accomplished four times. In addition, Gretzky tallied over 100 points in 16 professional seasons, 14 of them consecutive. At the time of his retirement in 1999 and persisting through 2017, he holds 61 NHL records: 40 regular season records, 15 playoff records, and six All-Star records.

Born and raised in Brantford, Ontario, Canada, Gretzky honed his skills at a backyard rink and regularly played minor hockey at a level far above his peers. Despite his unimpressive stature, strength and speed, Gretzky's intelligence and reading of the game were unrivaled. He was adept at dodging checks from opposing players, and consistently anticipated where the puck was going to be and executed the right move at the right time. Gretzky became known for setting up behind his opponent's net, an area that was nicknamed "Gretzky's office".

In 1978, Gretzky signed with the Indianapolis Racers of the World Hockey Association (WHA), where he briefly played before being traded to the Edmonton Oilers. When the WHA folded, the Oilers joined the NHL, where he established many scoring records and led his team to four Stanley Cup championships. Gretzky's trade to the Los Angeles Kings on August 9, 1988, had an immediate impact on the team's performance, eventually leading them to the 1993 Stanley Cup Finals, and he is credited with popularizing hockey in California. Gretzky played briefly for the St. Louis Blues before finishing his career with the New York Rangers. Gretzky captured nine Hart Trophies as the most valuable player, 10 Art Ross Trophies for most points in a season, two Conn Smythe Trophies as playoff MVP and five Lester B. Pearson Awards (now called the Ted Lindsay Award) for most outstanding player as judged by his peers. He won the Lady Byng Memorial Trophy for sportsmanship and performance five times, and often spoke out against fighting in hockey.

On March 23, 1994, Wayne Gretzky scores his 802nd goal, breaking his childhood idol Gordie Howe’s National Hockey League record for most goals scored in a career. Gretzky, known to hockey fans as "The Great One," broke a total of 61 offensive records in his NHL career, including many previously held by "Mr. Hockey" Gordie Howe.