O'Grady, Standish (James) (1846–1928), an Irish historian and man of letters. His History of Ireland (2 volumes, 1878–80), emphasizing legends and tales of ancient Ireland, inspired William Butler Yeats and other poets of the Irish, or Celtic, renaissance of the late 19th and early 20th centuries. For this reason, O'Grady has been called the “ideological father” of the movement. Early Bardic Literature (1879) also directed attention to Ireland's heroic past.

O'Grady was born in County Cork. After graduating from Trinity College, Dublin, in 1868, he became a lawyer but soon turned to writing. From 1900 to 1906 he edited the All Ireland Review, an influential literary weekly.

His other books include: The Bog of Stars (1893); The Flight of the Eagle (1897); In the Gates of the North (1901); The Passing of Cuculain (1917).