The MLS Cup Playoffs is the annual postseason elimination tournament of Major League Soccer. The MLS Cup, the league's championship game, is the final match of the tournament. Under the current format adopted for the 2023 season, 18 teams qualify for the tournament based on regular-season point totals — the nine highest-placed teams from each the Eastern Conference and the Western Conference. Audi is the title sponsor of this tournament.

The playoffs, play-offs, postseason or finals of a sports league are a competition played after the regular season by the top competitors to determine the league champion or a similar accolade. Depending on the league, the playoffs may be either a single game, a series of games, or a tournament, and may use a single-elimination system or one of several other different playoff formats. Playoff, in regard to international fixtures, is to qualify or progress to the next round of a competition or tournament.