John J. Dillon was American college football player and coach and baseball player.

Dillon was a two-sport athlete at Syracuse University, playing quarterback for the football team from 1898 to 1900 and catcher for the baseball team.

[1] Dillon coached the 1901 Case School of Applied Science football team to a 2–7 record, which included a win over rival Western Reserve University.

[2] Dillon played Minor League Baseball for five seasons on several teams, including on the championship 1903 Jersey City Skeeters.

[3] Dillon performed in theater for several years, including as early as 1905 for "The Awakening of Mr.