Here's C.S. Lewis's Chronicles of Narnia in Publication Order. From what I understand, it is recommended that first-time readers read them in publication order, but on reread you can read them in chronological order.

The Chronological Order is as follows:

The Magician's Nephew The Lion, the Witch and the Wardrobe The Horse and His Boy Prince Caspian The Voyage of the Dawn Treader The Silver Chair The Last Battle