List of teams that have overcome 3–1 series deficits

The following is the list of teams that have overcome 3–1 series deficits mainly concerning North American professional sports within a best-of-seven series. The listed teams won three consecutive games after being down three games to one. Unsuccessful comebacks are also listed, in which teams evened a series after being behind 3–1, then lost the final game of the series.

The best-of-seven playoff structure is common in North American professional sports, particularly in the sports of baseball, basketball, and ice hockey, and prominently in three of the major North American professional sports leagues: Major League Baseball, the National Basketball Association, and the National Hockey League.

There are also some intermediate North American leagues below the major league level that use the best-of-seven format, such as hockey's Calder Cup. The format is also used outside of North America, including the Taiwan Series baseball tournament, the final round of the Japan Series, the Chinese, Italian, Lithuanian, Polish, and Turkish basketball leagues, and later rounds of the Gagarin Cup of the Kontinental Hockey League (KHL) based in Russia, Belarus, Kazakhstan and China.

All 3–1 deficit comebacks in a seven-game series involve winning three straight elimination games, including a winner-take-all Game 7. Longer series of this nature are almost always structured as single-elimination knockout tournaments, so one more loss ends playoff contention for the losing side.

This is similar to a comeback from a 2–0 series deficit in a best-of-five series, which also requires winning three straight games.

Implicit in overcoming a 3–1 series deficit are all teams that have overcome a 3–0 series deficit. These are noted in the series comment cells and — lacking an explicit column in the tabular format — can be identified with a "3–0".