John O'Keeffe (24 June 1747 – 4 February 1833) was an Irish actor and dramatist. He wrote a number of farces, amusing dramatic pieces and librettos for pasticcio operas, many of which had great success. Among these are Tony Lumpkin in Town (1778), Love in a Camp (1786), and Omai (1785), an account of the voyages of the Tahitian explorer Omai, and Wild Oats (1791).