Diarmuid Wilson (born 20 November 1965) is an Irish Fianna Fáil politician and member of Seanad Éireann, elected by the Administrative Panel since September 2002.A member of Cavan County Council from 1999 to 2004, he was first elected to the Seanad in 2002 and was re-elected in 2007 and 2011. He is the nephew of John Wilson, who was a Teachta Dála, cabinet minister and Tánaiste. He is the Fianna Fáil whip in the Seanad and spokesperson for Labour Affairs, Trade and Commerce.