John O'Brien (Dublin footballer)
John O'Brien is a senior inter-county Gaelic footballer for Dublin and Round Towers. He made his debut in the 2008 O'Byrne Cup against Wicklow.
O'Brien made his NFL debut for Dublin against Westmeath in the first round. He was on Dublin's winning team for the 2008 O'Byrne Cup winning team which defeated Longford in the final.
