| 1919 |
Spirits in Bondage (published under the pseudonym Clive Hamilton) |
| 1926 |
Dymer (published under the pseudonym Clive Hamilton) (out of print) |
| 1933 |
The Pilgrim's Regress: An Allegorical Apology for Christianity, Reason and Romanticism |
| 1936 |
The Allegory of Love: A Study in Medieval Tradition |
| 1938 |
Out of the Silent Planet (Book one in The Space Trilogy) |
| 1939 |
The Personal Heresy A Controversy, (with E. M. W. Tillyard - out of print) and Rehabilitations and Other Essays (hard to find) |
| 1940 |
The Problem of Pain |
| 1942 |
Broadcast Talks (1941 and 1942 BBC radio lectures which became part of Mere Chrisitianity) The Screwtape Letters and A Preface to "Paradise Lost" |
| 1943 |
Perelandra (Book two in The Space Trilogy) and, The Abolition of Man |
| 1944 |
Beyond Personality (from his BBC talks and later published as part of Mere Christianity) |
| 1945 |
The Great Divorce and That Hideous Strength (Book three in The Space Trilogy) |
| 1947 |
Miracles: A Preliminary Study |
| 1948 |
Arthurian Torso (first half written by Charles Williams; second half written by Lewis after Williams' death) |
| 1949 |
Transposition and Other Addresses (out of print) |
| 1950 |
The Lion, the Witch and the Wardrobe (volume one in Chronicles of Narnia) |
| 1951 |
Prince Caspian: The Return to Narnia (volume two in Chronicles of Narnia) |
| 1952 |
Mere Christianity (which includes Broadcast Talks, Christian Behaviour and Beyond Personality) and The Voyage of the "Dawn Treader" (volume three in Chronicles of Narnia) |
| 1953 |
The Silver Chair (volume four in Chronicles of Narnia) |
| 1954 |
The Horse and His Boy (volume five of Chronicles of Narnia) and English Literature in the Sixteenth Century Excluding Drama |
| 1955 |
Surprised by Joy: The Shape of My Early Life and The Magician's Nephew (volume six in Chronicles of Narnia) |
| 1956 |
The Last Battle (volume seven in Chronicles of Narnia) and Till We Have Faces: A Myth Retold |
| 1958 |
Reflections on the Psalms |
| 1960 |
The Four Loves, Studies in Words, and The World's Last Night and Other Essays |
| 1961 |
A Grief Observed and An Experiment in Criticism |
| 1964 |
Letters to Malcolm: Chiefly on Prayer which he finished in 1963, published posthumously. |
