List of American League pennant winners

Each season, one American League (AL) team wins the pennant, signifying that they are the league's champion and have the right to play in the World Series against the champion of the National League. The pennant was presented to the team with the best win–loss record each year through the 1968 season, after which the American League Championship Series (ALCS) was introduced to decide the pennant winner. The first modern World Series was played in 1903 and, after a hiatus in 1904, has taken place in every season since except 1994, when a players' strike forced the cancellation of the postseason. The current American League pennant holders are the Kansas City Royals, who won their fourth pennant in October 2015.