| Tournament details | |
|---|---|
| Dates | October 4–22, 1975[1] |
| Teams | 4 |
| Final positions | |
| Champions | Cincinnati Reds (3rd title) |
| Runner-up | Boston Red Sox (9th World Series appearance) |
| Tournament statistics | |
| MVP | Pete Rose (CIN) |
The 1975 Major League Baseball postseason was the playoff tournament of Major League Baseball for the 1975 season. The winners of each division advance to the postseason and face each other in a League Championship Series to determine the pennant winners that face each other in the World Series.
In the American League, the Oakland Athletics made their fifth straight postseason appearance, and the Boston Red Sox made their first postseason appearance since the 1967 World Series. In the National League, the Cincinnati Reds returned for the fourth time in the past six seasons, and the Pittsburgh Pirates returned for the fifth time in the past six seasons. This edition of the postseason would replicate itself in 1990, as all four teams from the 1975 postseason would return that year.
The playoffs began on October 4, 1975, and concluded on October 22, 1975, with the Cincinnati Reds defeating the Boston Red Sox in seven games in the 1975 World Series. It was the first title for the Reds since 1940, and their third overall.