Ryan Cousins (born April 1, 1981 in Toronto, Ontario) is a former professional lacrosse player.

Cousins played for eleven seasons in the National Lacrosse League, winning a championship in 2012 with the Rochester Knighthawks.

[4] In July 2011, Cousins was traded to the Edmonton Rush, along with Aaron Wilson and Kevin Croswell, in exchange for a number of entry draft picks.

The Rush sent Cousins, Alex Kedoh Hill, and Andy Secore to Rochester for Knighthawks captain Shawn Williams and Aaron Bold.

[6] Cousins suffered a knee injury prior to the 2012 season, and was considering retirement, but was convinced by the Knighthawks to return.