Vivian O'Callaghan (born 7 August 1944) is an Irish former Fianna Fáil politician. He served as a member of Seanad Éireann from 1987 to 1989.^[1] He was nominated by the Taoiseach Charles Haughey to the 18th Seanad in 1987.^[2] He was an unsuccessful candidate at the 1989 and 1993 Seanad elections.^[2] He is a former member of Cork County Council.^{[citation needed]}