Gerard MacLochlainn (born 1954) is a Sinn Féin politician from Derry, Northern Ireland, where he was a councillor. He chaired several of the council's major committees including regional and cross border committees. His writings were widely circulated in his now deceased wife (Valerie June "Val" Cardwell)'s native Wales and several of his prison letters are held in the National Library of Wales.[why?][1]