Did C S Lewis join the Mormon church?

Answer 1

No. C S Lewis was an atheist for much of his life, and then, through systematic study of scripture and being influenced by the Holy Spirit, accepted Jesus as Lord, and became a Christian and a very active member of the Church of England (part of the worldwide Anglican Church, which includes the US Episcopalian Church).

St Paul was a pharisee and persecutor of Christians who went on to become a Christian and from then became the author of some of the most authoritative and inspirational writings in his letters in the New Testament. In a similar way C S Lewis, although previously an author, became, after his conversion, one of the world's great Christian authors, not only writing the Narnia series for children (that have a profound Christian overtone and allegory) but also many Christian works for adults including his famous 'Mere Chriistianity' and 'Screwtape Letters'.

As a prominent Christian and Oxford don, C S Lewis spoke out for Christianity and Christian principles and regarded Mormons, and Jehovahs Witnesses, as heretics, and spoke out against them. During my wife's training for ministry she spend a year in a parish whose lay preacher was a friend of Lewis at Oxford, and he testified to Lewis's profound and informed Christian beliefs and his rejection of Mormonism, the JWs and other unorthodox sects.

The above answer suffers from the kind of smug Tribalism that C.S. Lewis absolutely loathed. Lewis never would have referred to any Christian denomination as "Heretics". C.S. Lewis wasn't the sort of man who spread hate and divisiveness. It's true that Lewis never joined any Church other than the COE, but it's also true that he was a Christian in the truest sense, in that he valued Christian Behavior over juvenile attacks on other Denominations, or even other Religions.

Answer 2

No, C.S. Lewis did not join the Mormon church. He was a prominent Christian apologist and a member of the Church of England.