The 1921 All-Big Ten Conference football team consists of American football players selected to the All-Big Ten Conference teams chosen by various selectors for the 1921 Big Ten Conference football season.
BE = Billy Evans, "N.E.A. Sports Expert; American League Umpire; and Football Official"
CA = Chicago American, selected by Harold Johnson
WE = Walter Eckersall for the Chicago Tribune
LH = Luther A. Huston of the International News Service