The 2015 season was the 103rd season of competitive soccer in the United States.

Note: the table below has no impact on playoff qualification and is used solely for determining host of the MLS Cup, certain CCL spots, the Supporters' Shield trophy, seeding in the 2016 Canadian Championship, and 2016 MLS draft.

The conference tables are the sole determinant for teams qualifying for the playoffs.

teams in bold are still active in the competition D.C. advanced to the quarterfinals, played in 2016 LA advanced to the quarterfinals, played in 2016 Real Salt Lake advanced to the quarterfinals, played in 2016 Seattle advanced to the quarterfinals, played in 2016