David Patrick Moran (Irish: Dáithí Pádraig Ó Móráin; 22 March 1869 – 31 January 1936), better known as simply D. P. Moran, was an Irish journalist, activist and cultural-political theorist, known as the principal advocate of a specifically Gaelic Catholic Irish nationalism during the early 20th century. Associated with the wider Celtic Revival, he promoted his ideas primarily through his journal, , and compilations of his articles such as the book The Philosophy of Irish Ireland.