Harry Samuel "Steamboat" Johnson (March 26, 1880 – February 20, 1951) was a professional baseball umpire.

He issued 11 ejections during that season, including New York Giants manager John McGraw twice in two days at the end of July.

"[1] In 1923, Johnson declared a spring training game a forfeit against the Detroit Tigers, after player-manager Ty Cobb had been ejected by Johnson's fellow umpire but refused to leave the field.

[2] In 1935, Johnson published his memoirs, Standing the Gaff, which is considered a baseball classic.

[citation needed] He estimated that he had umpired over 4,000 games and made a million decisions.