The New Monthly Magazine was a British monthly magazine published by Henry Colburn between 1814 and 1884.
Colburn and Frederic Shoberl established The New Monthly Magazine and Universal Register as a "virulently Tory" competitor to Sir Richard Phillips' Monthly Magazine in 1814. "The double-column format and the comprehensive contents combined the Gentleman's Magazine with the Annual Register".
In its April 1819 issue it published John Polidori's Gothic fiction The Vampyre, the first significant piece of prose vampire literature in English, attributing it to Lord Byron (who partly inspired it).
In 1821 Colburn recast the magazine with a more literary and less political focus, retitling it The New Monthly Magazine and Literary Journal. Nominally edited by the poet Thomas Campbell, most editing fell to the sub-editor Cyrus Redding. Colburn paid contributors well, and they included Sydney Morgan, Thomas Charles Morgan, Peter George Patmore, Mary Shelley, Charles Lamb, Leigh Hunt, Stendhal, Thomas Noon Talfourd, Letitia Elizabeth Landon, Ugo Foscolo, Richard Lalor Sheil, Mary Russell Mitford, Edward Bulwer, James and Horace Smith, and William Hazlitt. Hazlitt's "Table-Talk" essays, begun in the London Magazine, appeared in the New Monthly from late 1821, his essay "The Fight" appeared in 1822, and his series "The Spirits of the Age'" was later republished, with essays from other sources, in the book The Spirit of the Age (1825).