| Tournament details | |
|---|---|
| Dates | October 3–15, 1970[1] |
| Teams | 4 |
| Final positions | |
| Champions | Baltimore Orioles (2nd title) |
| Runner-up | Cincinnati Reds (5th World Series appearance) |
| Tournament statistics | |
| MVP | Brooks Robinson (BAL) |
The 1970 Major League Baseball postseason was the playoff tournament of Major League Baseball for the 1970 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 Baltimore Orioles and Minnesota Twins returned to the postseason for the second straight year. In the National League, the Cincinnati Reds made their first postseason appearance since the 1961 World Series, and the Pittsburgh Pirates made their first appearance since the 1960 World Series. Both the Pirates and Reds would make five more postseason appearances throughout the decade.
The playoffs began on October 3, 1970, and concluded on October 15, 1970, with the Baltimore Orioles defeating the Cincinnati Reds in five games in the 1970 World Series. It was the Orioles' second championship in franchise history.