Marion Arthur Blankenhorn (November 13, 1885 – September 3, 1957) was an American college football coach and physician.

In 1909, right after graduating from the College of Wooster, Blankenhorn was hired as the head football coach for Buena Vista.

After his brief stint with Buena Vista and after he earned his doctorate, he was named an associate professor for Western Reserve.

[5] He enlisted in World War II and worked on aviation medicine for the United States Army and later as an investigator in Europe while teaching for the Surgeon General's Office in the Far East.

[2] In 1939, Blankenhorn was nominated for a Nobel Prize in Physiology or Medicine by Primo Dorello and Osvaldo Polimanti.