Surprised by Joy: The Shape of my Early Life. 1955.
A Grief Observed. 1961.
Letters of C. S. Lewis, ed. W. H. Lewis. 1966. Revised and enlarged edition, ed. Walter Hooper, 1988.
Letters to an American Lady, ed. Clyde S. Kilby. 1967.
Sheldon Vanauken, A Severe Mercy (1977) - contains seventeen previously unpublished letters by Lewis.
They Stand Together: The Letters of C. S. Lewis to Arthur Greeves. 1979.
Letters to Children, ed. Lyle W. Dirsett and Marjorie Lamp Mead. 1985.
Letters - C. S. Lewis, Don Giovanni Calabria: A Study in Friendship, trans. and ed. Martin Moynihan. 1988.
Spirits in Bondage. 1919.
Dymer. 1926.
Poems, ed. Walter Hooper. 1964.
Narrative Poems, ed. Walter Hooper. 1969.
The Collected Poems of C. S. Lewis, ed. Walter Hooper. 1994.
The Pilgrim's Regress. 1933.
the "Ransom trilogy":
Out of the Silent Planet. 1938.The Great Divorce: A Dream. 1946.Perelandra. 1943.
That Hideous Strength. 1945.
the Chronicles of Narnia
The Lion, the Witch and the Wardrobe. 1950.Till We Have Faces: A Myth Retold. 1956.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.
The Dark Tower and Other Stories, ed. Walter Hooper. 1977.
Boxen: The Imaginary World of the Young C. S. Lewis. 1985.
The Problem of Pain. 1940.
The Screwtape Letters. 1942.
The Abolition of Man. 1943.
Miracles. 1947.
Mere Christianity. 1952. (Combines Broadcast Talks, or The Case for Christianity - 1942, Christian Behaviour - 1943, and Beyond Personality - 1944.)
Reflections on the Psalms. 1958
The Four Loves. 1960.
The World's Last Night and Other Essays. 1960.
Letters to Malcolm: Chiefly on Prayer 1963.
The Allegory of Love: A Study in Medieval Tradition. 1936.
A Preface to Paradise Lost. 1942.
English Literature in the Sixteenth Century, Excluding Drama. 1954.
Studies in Words. 1960.
An Experiment in Criticism. 1961.
The Discarded Image: An Introduction to Medieval and Renaissance Literature. 1964.
Spenser's Images of Life, ed. Alastair Fowler. 1967.
Rehabilitations and Other Essays. 1939.
They Asked for a Paper: Papers and Addresses. 1962.
The Weight of Glory and Other Addresses. 1949.
Studies in Medieval and Renaissance Literature, collected by Walter Hooper. 1966.
Of Other Worlds, ed. Walter Hooper. 1966.
Christian Reflections, ed. Walter Hooper. 1967.
Selected Literary Essays, ed. Walter Hooper. 1969.
God in the Dock: Essays on Theology and Ethics, ed. Walter Hooper. 1960.
On Stories and Other Essays on Literature. 1982.
Present Concerns, ed. Walter Hooper. 1986.
For a complete bibliography of Lewis's writings, see Walter Hooper, "A
Bibliography of the Writings of C. S. Lewis," in C. S. Lewis: A
Companion and Guide. 1996.