John Allen Armstrong Jr. (August 10, 1897 – April 30, 1960)[1][2] was an American football player and coach.

A quarterback in college, Armstrong helped the school's football team win conference titles in 1919 and 1920.

[7] For his last professional football season, 1926, he also served as coach for Rock Island in the AFL; the Independents were 2–6–1 that year.

[2] Armstrong also played minor league baseball for the Watertown Cubs, Dubuque Climbers/Dubs/Ironmen, Oklahoma City Indians, and Davenport Blue Sox from 1921 to 1929.

[1] He was the head football and basketball coach at Columbia College—now known as Loras College—in Dubuque, in addition to managing a recreation hall.