|Born:||August 10, 1897|
|Died:||April 30, 1960 (aged 62)|
|College:||University of Dubuque|
|Head coaching record|
|Coaching stats at PFR|
Armstrong was born in Hutchinson, Kansas. From 1918 to 1922, he attended the University of Dubuque in Dubuque, Iowa, where he was a four-sport athlete. A quarterback in college, Armstrong helped the school's football team win conference titles in 1919 and 1920. In addition, he received varsity letters in baseball, basketball, and track. Professionally, he played on the Rock Island Independents of the National Football League (NFL), and later the first American Football League, from 1923 to 1926 as an end, halfback, and quarterback. 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. He was the head football coach at Columbia College—now known as Loras College—in Dubuque, in addition to managing a recreation hall. In 1960, Armstrong died in Dubuque.
- Maxymuk, John (2012). NFL Head Coaches: A Biographical Dictionary, 1920–2011. McFarland & Company. pp. 354–355. ISBN 9780786465576.
- "John Armstrong". Pro Football Reference. Retrieved February 6, 2018.
- "Johnny Armstrong ('22)". University of Dubuque. Retrieved February 6, 2018.
- "Johnny Armstrong". Database Football. Archived from the original on January 4, 2009. Retrieved June 10, 2017. Cite uses deprecated parameter
- Hogrogian, John (1982). "All-Pros of the Early NFL" (PDF). Coffin Corner. 4 (11). Archived from the original (PDF) on December 18, 2010. Retrieved June 10, 2017. Cite uses deprecated parameter
- "John Armstrong Coaching Results". Pro Football Reference. Retrieved November 19, 2008.
- "John Armstrong". Baseball-Reference. Retrieved February 24, 2011.
- "History of Loras College". Loras College. Retrieved February 6, 2018.
- Career statistics and player information from Pro-Football-Reference
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