Norman Houston O'Neill (14 March 1875 – 3 March 1934) was an English composer and conductor of Irish background who specialised largely in works for the theatreO'Neill was born at 16 Young Street in Kensington, London, the youngest son of the Irish painter George Bernard O'Neill and Emma Stuart Callcott. He studied in London with Arthur Somervell and with Iwan Knorr at the Hoch Conservatory in Frankfurt from 1893 to 1897. His studies there were facilitated by Eric Stenbock. He belonged to the Frankfurt Group, a circle of composers who studied at Hoch's Conservatory in the late 1890s.