Kieran Marmion (born 11 February 1992) is an Irish rugby union player who primarily plays as a scrum-half. Marmion currently plays for Irish provincial side Connacht in the Pro14. Marmion came into Connacht's academy through the Irish Exiles program and plays his club rugby with Galway Corinthians. Marmion has played his international rugby for Ireland since under-age level making his full debut in 2014.