The 2007–08 NHL season was the 91st season of operation (90th season of play) of the National Hockey League (NHL). It began on September 29, 2007, with the regular season ending April 6, 2008. The Stanley Cup playoffs ended on June 4, with the Detroit Red Wings taking the championship .The 56th NHL All-Star Game was held in Atlanta, Georgia as the Atlanta Thrashers hosted the event at Philips Arena on January 27, 2008. The hosting by Atlanta was rescheduled from 2005, when a lockout cancelled the entire 2004–05 season.

National Hockey League announced that the regular season salary cap would be going up for the third consecutive season. The 2007–08 salary cap is being increased by $6,300,000 (US) per team to bring the salary cap up to $50,300,000 (US). The salary floor is at $34,300,000 (US), which is 71.5% higher than the salary floor on 2005–06 season.

The season featured the debut of Reebok's new Rbk Edge hockey jerseys. This was the first league-wide uniform innovation in the history of any major North American professional sports league. Seven teams (Boston, Tampa Bay, Vancouver, Washington, Ottawa, San Jose and Columbus) unveiled new logos prior to the season's beginning.

Mats Johan Sundin (Swedish pronunciation: [mats sɵndiːn]; born February 13, 1971) is a retired Swedish professional ice hockey player. Originally drafted first overall in 1989, Sundin played his first four seasons in the NHL with the Quebec Nordiques. He was traded to the Toronto Maple Leafs in 1994, where he played the majority of his career, serving 11 seasons as team captain. At the end of the 2007–08 NHL season, Sundin had been the longest serving non-North American born captain in NHL history. Sundin last played for the Vancouver Canucks in the 2008–09 season before announcing his retirement on September 30, 2009. Consecutively he played 13 of his 18 NHL seasons with the Toronto Maple Leafs. He appeared in the NHL playoffs in 10 seasons.

Excluding his rookie season, the shortened lockout season and his half season with the Vancouver Canucks, Sundin scored at least 70 points in every season of his career, played at least 70 games in every season, and led the Leafs in points in every year he was with the team except 2002–03, when Alexander Mogilny beat him by seven points. On October 14, 2006, Sundin became the first Swedish player to score 500 goals. He is the Leafs' franchise all-time leader in goals (420) and points (984). Over his career, Sundin averaged just over a point per game (1349 points in 1346 NHL games).