|Rock Island Independents|
|Date of birth:||August 10, 1897|
|Place of birth:||Kansas|
|Date of death:||April 30, 1960(aged 62)|
|Place of death:||Dubuque, Iowa|
|College:||University of Dubuque|
|Head coaching record|
|Coaching stats at PFR|
John A. Armstrong, Jr. (August 10, 1897 – April 30, 1960) was an American football player and coach. After attending the University of Dubuque, where he was a four-sport athlete, he coached at Columbia College, in addition to managing a recreation hall. Armstrong played on the Rock Island Independents of the National Football League, and later the first American Football League, from 1923–1926. The Green Bay Press-Gazette named Armstrong a third-team All-Pro in 1923. That season, Armstrong was the NFL leader in passing yards and passes intercepted, according to unofficial statistics.
In 1924, Armstrong coached the Independents to a 5–2–2 record, and a fifth-place finish. 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. Armstrong also played minor league baseball for the Dubuque Climbers/Dubs/Ironmen and Oklahoma City Indians from 1922 to 1928.
- Maxymuk, John (2012). NFL Head Coaches: A Biographical Dictionary, 1920–2011. McFarland & Company. pp. 354–355. ISBN 9780786465576.
- McGrane, Bert (2005-07-14). "Johnny Armstrong, Dubuque, 1951 Lynn King, Villisca, 1951". Des Moines Register. Retrieved 2012-01-25.
- "Johnny Armstrong". Database Football. Retrieved 2008-11-19.
- Hogrogian, John (1982). "All-Pros of the Early NFL" (PDF). Coffin Corner. 4 (11). Retrieved 2012-01-25.
- "John Armstrong Coaching Results". Pro Football Reference. Retrieved 2008-11-19.
- "John Armstrong". Baseball-Reference. Retrieved 2011-02-24.
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