The 2006 Stanley Cup playoffs for the National Hockey League (NHL) championship began on April 21, 2006, following the 2005–06 regular season. The 16 teams that qualified, seeded one through eight from each conference, played best-of-seven series with re-seeding after the Conference Quarterfinals. The conference champions played a best-of-seven series for the Stanley Cup.
The finals concluded on June 19 with the Carolina Hurricanes winning the Stanley Cup, defeating the Edmonton Oilers in the final series four games to three. Carolina goaltender Cam Ward was awarded the Conn Smythe Trophy as Most Valuable Player of the playoffs.
While the 2005–06 season introduced a shootout to break ties after five minutes of four-on-four overtime, the Stanley Cup playoffs retained their traditional format of unlimited 20-minute periods of five-on-five sudden-death overtime to break ties.
The Western Conference made history in the first round when all four series were won by the lower-seeded teams (conversely, all four series in the Eastern Conference were won by the higher-seeded teams). The eighth- and lowest-seeded Oilers proceeded to win the Western Conference and participate in the Stanley Cup Finals. Four Canadian teams qualified for the playoffs this year, this total was not equaled again until 2013.