William Edward Haller (February 28, 1935 – August 20, 2022) was an American Major League Baseball umpire. Haller officiated 3,068 regular season games in the American League in 1961 and from 1963 to 1982. He also worked 15 American League Championship Series games in four series (1970, 1973, 1976, and 1980), 27 World Series contests in four different years (1968, 1972, 1978, and 1982) and four All-Star games (1963, 1970, 1975, and 1981).[1]