Seanan O'Duchon (born 1969 in Dublin) is a former Irish football player who played as a full back.
He began his career at Wayside Celtic F.C. in 1989 and signed for Shamrock Rovers F.C. in 1992 under Ray Treacy.
He made his debut in the first game of the 1992/93 season on the 30th of August .
O'Duchon scored his only goal for the Hoops in Dundalk on the 9th of October .
He made 10 League appearances in his debut season but did not figure at all when Rovers won the League of Ireland Championship the following season. In 1994/95 he made 12 total appearances which included 1 appearance in the UEFA Cup .
Overall, he made 28 total appearances for the Hoops in 3 years.
He moved back to Wayside in 1995.