 | |
| Season | 2015 |
|---|---|
| MLS Cup | Portland Timbers (1st title) |
| Supporters' Shield | New York Red Bulls (2nd shield) |
| Champions League (United States) | FC Dallas New York Red Bulls Portland Timbers Sporting Kansas City |
| Champions League (Canada) | Vancouver Whitecaps FC |
| Matches played | 340 |
| Goals scored | 937 (2.76 per match) |
| Top goalscorer | Sebastian Giovinco Kei Kamara (22 goals each) |
| Best goalkeeper | Adam Kwarasey David Ousted (13 shutouts each) |
| Biggest home win | 5 goals: LA 5–0 POR (Jun 24) TOR 5–0 ORL (Aug 22) CLB 5–0 DC (Oct 25) |
| Biggest away win | 5 goals: SKC 0–5 SJ (Aug 19) |
| Highest scoring | 10 goals: DC 6–4 RSL (Aug 1) |
| Longest winning run | 6 games: New England Revolution (Aug 1 – Sep 16) |
| Longest unbeaten run | 9 games: New England Revolution (Mar 21 – May 16) Portland Timbers (Oct 14 – Dec 6) |
| Longest winless run | 11 games: New York City (Mar 21 – May 30) |
| Longest losing run | 5 games: New England Revolution (Jun 21 – Jul 11) Seattle Sounders FC (Jul 11 – Aug 9) Chicago Fire (Sep 5 – Sep 26) |
| Highest attendance | 64,358 SEA 2–1 POR (Aug 30) |
| Lowest attendance | 10,035 MTL 2–1 VAN (Jun 3) |
| Total attendance | 7,335,053 |
| Average attendance | 21,574 |
← 2014 2016 → | |
The 2015 Major League Soccer season featured 20 total clubs (17 based in the United States, 3 based in Canada). The regular season was held from March 6 through to October 25, whereas the MLS Cup Playoffs began on October 28 and ended with MLS Cup 2015 on December 6. The defending MLS Cup champions were the LA Galaxy, while Seattle Sounders FC were the defending Supporters' Shield winners.
It was the first season for expansion teams Orlando City SC and New York City, who both joined the Eastern Conference, while both the Houston Dynamo and Sporting Kansas City moved from the Eastern Conference to the Western Conference. Chivas USA folded at the end of the 2014 season.
At the end of the regular season, the New York Red Bulls of the Eastern Conference won the Supporters' Shield, while the team on top of the Western Conference was FC Dallas. The Portland Timbers won their first MLS Cup, winning 2–1 at Columbus Crew.