Isabella Augusta, Lady Gregory (15 March 1852–22 May 1932), née Isabella Augusta Persse, was an Anglo-Irish dramatist and folklorist. With William Butler Yeats and others, she co-founded the Irish Literary Theatre and the Abbey Theatre, and wrote numerous short works for both companies. She also produced a number of books of retellings of stories from Irish mythology. Born into a class that identified closely with British rule, her conversion to cultural nationalism, as evidenced in these writings, was emblematic of many of the changes to occur in Ireland during her lifetime.
However, Lady Gregory is mainly remembered for her driving force of the Irish Literary Revival. Her home at Coole Park, County Galway served as an important meeting place for the leading Revival figures and her early work as a member of the board of the Abbey was at least as important for the theatre's development as her creative writings were. Her motto, taken from Aristotle, was "To think like a wise man, but to express oneself like the common people."