John Quenby (born 30 October 1941) has been one of the most influential figures in British motorsport becoming Chief Executive of the RAC Motor Sports Association (1990-2001), the official governing body of motorsport in the UK, a director of the Auto-Cycle Union (1995–98), Chairman of the Speedway Control Board (1998-2002) and former Chairman of the Motorcycle Circuit Racing Control Board (1995-2000).