The 2009 MLS Cup Playoffs is the postseason to Major League Soccer's 2009 season.

MLS Cup 2009 concluded the season on November 22, 2009, at Qwest Field in Seattle, Washington.

Real Salt Lake won the Cup in penalties over the L.A. Galaxy.

In all rounds, the tie-breaking method was two 15-minute periods of extra time, followed by penalty kicks if necessary.

1 Real Salt Lake earned the eighth and final playoff berth, despite finishing fifth in the Western Conference.