John Raymond Dyer Sr. OAM (15 November 1913 – 23 August 2003), nicknamed Captain Blood, was an Australian rules footballer who played for the Richmond Football Club in the Victorian Football League (VFL) between 1931 and 1952. One of the game's most prominent players, he was one of 12 inaugural "Legends" inducted into the Australian Football Hall of Fame. He later turned to coaching and work in the media as a popular broadcaster and journalist.