John Morris attended the London 1948 Olympic Games as a travelling reserve.
John Morris was one of 17 children which included 3 brothers who played for Bohemians FC in the 1940s and 1950s, along with Frank and Paul (later known as Father John Francis). Morris started his career at University College Dublin (UCD) in 1945 prior to joining Bohemians, playing at the position of right-half.