| top goal scorer = Clint Dempsey (3 goals) | prevseason = 2016 | nextseason = 2018
The 2017 MLS Cup playoffs (branded as the 2017 Audi MLS Cup Playoffs for sponsorship reasons) began on October 25 and ended on December 9 with MLS Cup 2017, the 22nd league championship match for MLS. This was the 22nd version of the MLS Cup playoffs, the tournament culminating the Major League Soccer regular season. Twelve teams, the top six of each conference, competed in the playoffs.
The first round of each conference had the third-seeded team hosting the sixth seed while the fourth-seed hosted the fifth seed, in a single match to determine who advanced to the conference semifinals. In the conference semifinals, the top seed played the lowest remaining seed, while the second played the next-lowest. The winners advanced to the conference finals. Both the conference semifinals and conference finals were played as a two-legged aggregate series, with the higher-ranked team hosting the second leg. The winners advanced to the MLS Cup, a single match hosted by the participant with the better regular season record.
Qualified teams The top six teams from each conference advanced to the MLS Cup playoffs. Chicago and Portland won the seeding tiebreakers over Atlanta and Seattle, respectively, based on total wins.
Eastern Conference
Western Conference
Bracket
Knockout round
Summary
|colspan="5" bgcolor=#87CEFA align=center|Eastern Conference
|colspan="5" bgcolor=#FFAEB9 align=center|Western Conference
Eastern Conference
Western Conference
Conference semifinals
Summary
|colspan="5" bgcolor=#87CEFA|Eastern Conference
|colspan="5" bgcolor=#FFAEB9|Western Conference
Eastern Conference
2–2 on aggregate. Toronto FC won on away goals.
Columbus Crew SC won 4–3 on aggregate.
Western Conference
Seattle Sounders FC won 2–0 on aggregate.
Houston Dynamo won 2–1 on aggregate.
Conference finals
Summary
|colspan="5" bgcolor=#87CEFA|Eastern Conference
|colspan="5" bgcolor=#FFAEB9|Western Conference
Eastern Conference
Toronto FC won 1–0 on aggregate.
Western Conference
Seattle Sounders FC won 5–0 on aggregate.
MLS Cup 2017
Goalscorers RankPlayerClubGoals1 Clint DempseySeattle Sounders FC32 Jozy AltidoreToronto FC2 Will BruinSeattle Sounders FC Nicolás MezquidaVancouver Whitecaps FC Daniel RoyerNew York Red Bulls Víctor VázquezToronto FC David VillaNew York City FC Bradley Wright-PhillipsNew York Red Bulls9 Harrison AffulColumbus Crew SC 1 ArturColumbus Crew SC Alberth ElisHouston Dynamo Sebastian GiovincoToronto FC Ola KamaraColumbus Crew SC Sacha KljestanNew York Red Bulls Justin MeramColumbus Crew SC Fredy MonteroVancouver Whitecaps FC Víctor RodríguezSeattle Sounders FC Andraž StrunaNew York City FC Gustav SvenssonSeattle Sounders FC Cristian TecheraVancouver Whitecaps FC Gonzalo VerónNew York Red Bulls Kendall WastonVancouver Whitecaps FC
References