The 2002 American League Championship Series (ALCS) was a matchup between the Wild Card Anaheim Angels and the Central Division Champion Minnesota Twins. The Angels advanced to the Series after dethroning the reigning four-time AL Champion New York Yankees in the 2002 American League Division Series three games to one. The Twins made their way into the Series after beating the Athletics three games to two. The Angels won the Series four games to one and went on to defeat the San Francisco Giants in the 2002 World Series to win their first World Series championship.

The American League Championship Series (ALCS), also known as the American League Pennant, is a best-of-seven playoff and one of two League Championship Series comprising the penultimate round of Major League Baseball's (MLB) postseason. The winner of the ALCS wins the AL pennant and advances to the World Series, MLB's championship series, to play the winner of the National League's (NL) Championship Series. The ALCS began in 1969 as a best-of-five playoff and used this format until 1985, when it changed to its current best-of-seven format.