The 2009 Major League Soccer season, the 14th season of Major League Soccer, starts March 19 and ends November 22, 2009, with the MLS Cup 2009 at Qwest Field in Seattle, Washington. Current champion is Columbus Crew.

Clubs include: Chicago Fire, Chivas USA, Colorado Rapids, Columbus Crew, D.C. United, FC Dallas, Houston Dynamo, Kansas City Wizards, Los Angeles Galaxy, New England Revolution, New York Red Bulls, Real Salt Lake, San Jose Earthquakes, Seattle Sounders FC, Toronto FC.