Sean Marsden (born 17 January 1980 in Stirling) is a rugby union player who was born in Scotland but has spent most of his life in England, being capped by England at U16 Level, even scoring a hat-trick of tries against the land of his birth. He was then capped as part of the England under-18's team and played in the U18 Five Nations as it was then, now the U18 Six Nations. At the same time Sean played for Gloucester Rugby's Academy. Sean guided his team to the prestigious AASE title for several successive years. In 2019, Marsden coached England U18s.