What is the fourth movie of Narnia?
The fourth movie is either going to be MN (Magician's Nephew) or SC (Silver Chair) but the fourth book is PC (Prince Caspian)
I think you are asking if there will be a fourth Chronicles of Narnia movie, and the answer to that is that no one is really sure. Many think that it will depend on how well the third movie, The Voyage of the Dawn Treader, due for release on Dec 10th,does at the box office. Personally, I hope so, but...... yes there will be
Two answers: In the actual order in which the Chronicles of Narnia were written, and originally published by MacMillan, the fourth book is The Silver Chair. When Harper-Collins took over publication, Lewis's stepson Douglas Gresham recommended they be published according to Narnian chronology. Then, the fourth book became Prince Caspian.