John Roy Brock was an American professional baseball player. He played parts of two seasons, 1917 and 1918, in Major League Baseball, primarily as a catcher. Listed at 5 ft 6+1⁄2 in (1.69 m), 165 lb, Brock batted and threw right-handed. He was born in Hamilton, Illinois.
- Occupation
- baseball player
- Citizenship
- United States
- Born
- October 16, 1896
- Died
- October 27, 1951
