Arthur O'Leary

Arthur O'Leary may refer to:


 * Arthur A. O'Leary (1887–1962), American Jesuit educator and president of Georgetown University
 * Arthur O'Leary (preacher) (1729–1802), Irish Franciscan preacher and polemical writer
 * Arthur O'Leary (composer) (1834–1919), Irish composer and pianist
 * Arthur O'Leary (soldier) (1746–1773), Irish soldier in the Austro-Hungarian army