William Henry Dunlevy McCormick (24 October 1916, Derry – 28 August 1996) was one of founders of modern Irish architectural movement and one of the most important church architects in Northern Ireland.
He was responsible for designing twenty-seven ecclesiastical buildings and numerous commercial and state buildings, including the iconic Met Éireann building in Glasnevin , Dublin.
McCormick was an accomplished sailor and member of the Irish Cruising Club, for which he served as flag officer.