Eugene J. P. O'Brien (12 January 1897 â 29 September 1980) was an Irish politician. He was elected to Dáil ÃÂireann as a Cumann na nGaedheal Teachta Dála (TD) for the LeixâÂÂOffaly constituency at the 1932 general election. He lost his seat at the 1933 general election.