John Roach
John Roach may refer to any of the following:
- John Roach (shipbuilder), United States shipbuilder
- John Roach (bishop), bishop of the Catholic Church
- John Roach (baseball), former Major League Baseball pitcher
- John Roach (footballer, born 1862), Welsh international footballer
- John Roach (American football), football player
- John Roach (English footballer), English footballer played for Manchester United, FC Sète, and Accrington Stanley
- John C. Roach, justice on the Kentucky Supreme Court
- John Ross Roach, Canadian ice hockey player
- John Vinson Roach II pioneer of the personal computer