Bryan Edmund "Moose" Haas (born April 22, 1956) is a former professional baseball player who pitched in Major League Baseball (MLB) from 1976 to 1987. He appeared in the 1982 World Series as a member of the Milwaukee Brewers. Haas initially signed a letter of intent to play college baseball at Clemson before being drafted in the second round of the 1974 Major League Baseball draft by the Brewers.