Andrew Holger Olsen (30 November 1930 - 23 May 2014) was a former professional baseball umpire who worked in the National League from 1968 to 1980, wearing uniform number 12 for most of his career. Olsen umpired 1,860 major league games in his 13-year career.<unk> Olsen umpired 1,860 major league games in his 13-year career. ️<unk>️<unk>️<unk>️
1971, 1975, and 1978) and the 1976 Major League Baseball All-Star Game. Olsen juga bermain di liga minor dari tahun 1995 sampai tahun 1999, sebagai seorang pitcher.