John O'Neill (8 January 1777 – 1854) was an Irish writer, poet and playwright.
He wrote a number of popular songs around this time, the best-known being a satire, "The Clothier's Looking-Glass".
He wrote Alva, a drama, in 1821 and he enjoyed some popularity as a temperance poet.
His business ventures were not successful and he had a large family to support.
His last book, "Legends of Carrick" (edited by Mrs. S. C. Hall), was published in 1854.