Dennis O'Neill CBE OStJ FLSW FTCL ARCM (born 25 February 1948) is a Welsh operatic tenor and recording artist.
He studied privately with Professor Frederic Cox (Principal of the Royal Northern College of Music) in Manchester and then in London.
[1] Later, after a Royal Society of Arts award, he returned to Italy to study with Ettore Campogalliani in Mantua and Luigi Ricci in Rome.
He has given regular guest performances at the Metropolitan Opera New York, in Chicago, San Francisco, Zurich, Paris, Brussels, Vienna, Verona, Munich and Australia.
O'Neill is committed to the education of younger opera singers, and in Spring 2007 he became the director of the Cardiff International Academy of Voice.