Archer Edwin Reilly (August 17, 1891 – November 29, 1963) was a Major League Baseball player. Reilly played in one game in 1917, for the Pittsburgh Pirates. He did not get an at-bat in the game, only playing third base. Reilly led the Marshall College (now University) football team to an 8–0 season in his only year as Marshall's football coach, in 1919. As the Marshall baseball coach in spring of 1920, his team was 8–8, and was the Herd basketball coach for 1918–19, leading the team to a 2–5 mark.