The League Championship Series Most Valuable Player (MVP) Award is given annually to the Major League Baseball (MLB) players deemed to have the most impact on their teams' performances in each of the two respective League Championship Series that comprise the penultimate round of the MLB postseason. The award is given separately for a player in both the American League Championship Series and the National League Championship Series. It has been presented in the National League (NL) since 1977, and in the American League (AL) since 1980. Dusty Baker won the inaugural award in 1977 with the Los Angeles Dodgers, and Frank White won the first AL award in 1980 with the Kansas City Royals. The ten Hall of Famers to win LCS MVPs include Roberto Alomar, George Brett, Dennis Eckersley, Rickey Henderson, Kirby Puckett, Ozzie Smith, Willie Stargell, John Smoltz, Iván Rodríguez, and Mariano Rivera.

Dennis Lee Eckersley, nicknamed "Eck", is an American former professional baseball pitcher and color commentator. Between 1975 and 1998, he pitched in Major League Baseball (MLB) for the Cleveland Indians, Boston Red Sox, Chicago Cubs, Oakland Athletics, and St. Louis Cardinals. Eckersley had success as a starter, but gained his greatest fame as a closer, becoming the first of two pitchers in major league history to have both a 20-win season and a 50-save season in a career.