John Roach

• John Roach , United States shipbuilder
• John Roach , bishop of the Catholic Church
• John Roach , former Major League Baseball pitcher
• John Roach, Welsh international footballer
• John Roach , football player
• John Roach, 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