Eserleri
Düzyazı- The Allegory of Love: A Study in Medieval Tradition (1936)
- Rehabilitations and other essays (1939)
- The Personal Heresy: A Controversy (1939)
- The Problem of Pain (1940)
- A Preface to Paradise Lost (1942)
- The Abolition of Man (1943)
- Beyond Personality (1944)
- Miracles: A Preliminary Study (1947)
- Arthurian Torso (1948)
- Mere Christianity (1952)
- English Literature in the Sixteenth Century Excluding Drama (1954)
- Major British Writers, Vol I (1954)
- Surprised by Joy: The Shape of My Early Life (1955)
- Reflections on the Psalms (1958)
- The Four Loves (1960)
- Studies in Words (1960)
- An Experiment in Criticism (1961)
- A Grief Observed (1961; ilk defa "N. W. Clerk" takma adıyla basıldı)
- The Discarded Image: An Introduction to Medieval and Renaissance Literature (1964)
- God in the Dock: Essays on Theology and Ethics (1970)
- Studies in Medieval and Renaissance Literature (1966)
- Spenser`s Images of Life (1967)
- Letters to an American Lady (1967)
- Selected Literary Essays (1969)
- Letters to Malcolm: Chiefly on Prayer (1972)
- Of Other Worlds (1982; makaleler)
- All My Road Before Me: The Diary of C. S. Lewis 1922-27 (1993)
- Essay Collection: Literature, Philosophy and Short Stories (2000)
- Essay Collection: Faith, Christianity and the Church (2000)
- Collected Letters, Vol. I: Family Letters 1905-1931 (2000)
- Collected Letters, Vol. II: Books, Broadcasts and War 1931-1949 (2004)
Kurgu
- The Pilgrim`s Regress (1933)
- Space Trilogy
- Out of the Silent Planet (1938)
- Perelandra (1943)
- That Hideous Strength (1946)
- The Screwtape Letters (1942)
- The Great Divorce (1945)
- The Chronicles of Narnia
- The Lion, the Witch and the Wardrobe (1950)
- Prince Caspian (1951)
- The Voyage of the Dawn Treader (1952)
- The Silver Chair (1953)
- The Horse and His Boy (1954)
- The Magician`s Nephew (1955)
- The Last Battle (1956)
- Till We Have Faces (1956)
- Letters to Malcolm: Chiefly on Prayer (1963)
- The Dark Tower and other stories (1977)
- Boxen: The Imaginary World of the Young C. S. Lewis (1985)
Şiir
- Spirits in Bondage (1919; "Clive Hamilton" takma adıyla basıldı)
- Dymer (1926; "Clive Hamilton" takma adıyla basıldı)
- Narrative Poems (1969)
- The Collected Poems of C. S. Lewis (1994)