At which university did C.S. Lewis teach as a fellow and tutor for most of his career?

C.S. Lewis taught as a fellow and tutor at the University of Oxford for most of his academic career. He held a fellowship at Magdalen College, Oxford, from 1925 until 1954.

At Oxford, Lewis taught English literature and developed a reputation as an energetic lecturer, scholar, and conversationalist. His Oxford circle included J.R.R. Tolkien and other writers associated with the Inklings, an informal literary discussion group.

Lewis later became the first holder of the medieval and Renaissance English chair at the University of Cambridge in 1954. That appointment does not erase his long Oxford career, which is why questions about his main academic home have a specific answer. Cambridge was his later university post, while Oxford was where he spent decades teaching.