Oxford University Press (OUP) is the university press of the University of Oxford. It is the largest university press in the world, and its printing history dates back to the 1480s. Having been officially granted the legal right to print books by decree in 1586, it is the second oldest university press after Cambridge University Press.

It is a department of the University of Oxford and is governed by a group of 15 academics known as the Delegates of the Press, who are appointed by the vice-chancellor of the University of Oxford. The Delegates of the Press are led by the Secretary to the Delegates, who serves as OUP's chief executive and as its major representative on other university bodies. Oxford University Press has had a similar governance structure since the 17th century. The press is located on Walton Street, Oxford, opposite Somerville College, in the inner suburb of Jericho.

For the last 500 years, OUP has primarily focused on the publication of pedagogical texts and continues this tradition today by publishing academic journals, dictionaries, English language resources, bibliographies, books on indology, music, classics, literature, history, as well as bibles and atlases.

OUP has offices throughout the world, primarily in locations that were once part of the British Empire (mainly India and the United States).