Stephen Wayne Yeager is an American former professional baseball catcher. Yeager spent 14 of the 15 seasons of his Major League Baseball career, from 1972 through 1985, with the Los Angeles Dodgers. His last year, 1986, he played for the Seattle Mariners. From 2012 to 2018, Yeager was the catching coach for the Dodgers. He was co-MVP of the 1981 World Series.

The Willie Mays World Series Most Valuable Player (MVP) Award is given to the Major League Baseball (MLB) player deemed to have the most impact on his team's performance in the World Series, which is the final round of the MLB postseason. The award was first presented in 1955 as the SPORT Magazine Award, but is now decided during the final game of the Series by a committee of reporters and officials present at the game.