What was C.S. Lewis’s academic field at Oxford?

C.S. Lewis’s academic field at Oxford was English literature. He taught English at Magdalen College, Oxford, from 1925 until 1954.

Lewis was especially associated with medieval and Renaissance literature, subjects that also shaped his fiction and Christian writing. His scholarship included studies of literary history, allegory, and the development of English writing. He was known as both a demanding teacher and an energetic public communicator.

In 1954, Lewis moved to Cambridge University after receiving the newly created chair of Medieval and Renaissance English. This later appointment did not change his earlier Oxford field; it refined his specialization within English studies. Readers sometimes identify Lewis primarily as a theologian or fantasy author, but his professional university career was grounded in literary scholarship.