Howard Vernon (20 May 1848 - 26 July 1921) was an Australian actor best known for his performances in comic roles of Gilbert and Sullivan operas.
Vernon was born in Collins-street, Melbourne. His name was originally John Lett. On 2 February 1870, as Norman Letville, he married an actress, Mary Jane Walker (d. 1905). They had nine children.
Vernon developed a pleasing light tenor voice. In 1873, he played in a season of opera bouffes with the Alice May company. He joined an opera company that toured India. In 1874, he organized a company of his own, Royal English Opera Company, which went to China and in 1877 to Japan, where he was one of the earliest actors of European birth to appear on the Japanese stage. He later played Ange Pitou in La fille de Madame Angot, and Fritz in The Grand Duchess of Gerolstein in England with Alice May's company. Vernon then crossed to America and played with Emilie Melville at San Francisco.
He returned to Australia and took parts in light operas such as Gaspard in Le Cloches de Corneville, and Pippo in La Mascotte. His reputation was, however, not fully established until he began to play in Gilbert and Sullivan operas with the J. C.