The 2015 National Lacrosse League season, the 29th in the history of the NLL, began on January 2, 2015,[1] and ended with Game 2 of the Champion's Cup Finals series on June 5, 2015.

[2] In the finals, the Edmonton Rush defeated the Toronto Rock two games to none to win their first-ever Champion's Cup.

Reference: [52] x: Clinched playoff berth; c: Clinched playoff berth by crossing over to another division; y: Clinched division; z: Clinched best regular season record; GP: Games PlayedW: Wins; L: Losses; GB: Games back; PCT: Win percentage; Home: Record at Home; Road: Record on the Road; GF: Goals scored; GA: Goals allowedDifferential: Difference between goals scored and allowed; GF/GP: Average number of goals scored per game; GA/GP: Average number of goals allowed per game Saturday, May 16 - Game 1 at Blue Cross Arena, Rochester, New York: Rochester Knighthawks 10, Toronto Rock 9[37] Saturday, May 23 - Game 2 at Air Canada Centre, Toronto, Ontario: Toronto Rock 11, Rochester Knighthawks 8[40] Saturday, May 23 - Game 3 at Air Canada Centre, Toronto, Ontario: Toronto Rock 8, Rochester Knighthawks 2[40] Toronto wins series, 2–1.

Notes: Reference:[53] The following players lead the league in regular season points at the conclusion of games played on May 3, 2015.

[54] The following goaltenders lead the league in regular season goals against average at the conclusion of games played on May 3, 2015.