how many narnia books are there

There are 7 books in The Chronicles of Narnia series by C.S. Lewis.

Here they are in original publication order:

1. The Lion, the Witch and the Wardrobe (1950)

2. Prince Caspian (1951)

3. The Voyage of the Dawn Treader (1952)

4. The Silver Chair (1953)

5. The Horse and His Boy (1954)

6. The Magician’s Nephew (1955)

7. The Last Battle (1956)

Some modern editions number them in “chronological” in‑world order instead, but it is always these same seven books.