What religion did C.S. Lewis embrace after his 1931 conversion?

C.S. Lewis embraced Christianity after his conversion in 1931.

Lewis had been raised in the Church of Ireland but became an atheist during his adolescence. His return to religious belief developed gradually through conversations with friends and fellow writers, including Owen Barfield and J.R.R. Tolkien. In 1931, Lewis moved from theism to Christian belief, eventually identifying as an Anglican.

His conversion transformed his literary output. He wrote apologetic works such as Mere Christianity, The Problem of Pain, and Miracles, while Christian themes also shaped The Chronicles of Narnia and his science-fiction trilogy. Lewis presented Christianity as an intellectually serious and imaginative account of reality.

The date is sometimes simplified as the moment Lewis “became religious,” but his journey had several stages. His 1931 conversion specifically refers to his acceptance of Christianity, not merely a general belief in God.