The 1977 Major League Baseball postseason was the playoff tournament of Major League Baseball for the 1977 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. This was the first of two consecutive postseasons to feature the same teams - the New York Yankees, Kansas City Royals, Los Angeles Dodgers, and Philadelphia Phillies.