Oxford University Press

Oxford University Press (OUP) is the largest university press in the world, and by far the oldest on this list — it has origins in the 16th century, when the print trade was just getting off the ground! Today, OUP publishes books, journals, and selections of sheet music through itself and a few distinguished imprints. It’s best known for its dictionaries, historical guides, and literary fiction, such as those that come out of its Oxford World's Classics imprint.