The 2013 National Lacrosse League season, the 27th in the history of the NLL, began on January 5, 2013 and ended with the Championship game on May 11, 2013. The Rochester Knighthawks overcame a mediocre 8-8 season to get hot in the playoffs for the second straight year, defeating the Philadelphia Wings, Minnesota Swarm, and Washington Stealth to win their second straight Championship. The Knighthawks became the first team to repeat as NLL Champions since the 2002-2003 Toronto Rock.