What is the final book published in C.S. Lewis's Chronicles of Narnia?

The Last Battle is the final book published in C.S. Lewis's Chronicles of Narnia.

Published in 1956, the novel brings the Narnian series to its conclusion. Its plot involves a false Aslan, political deception, the collapse of the old Narnian order, and a final transition into a deeper reality. The story includes characters from earlier books and revisits themes of loyalty, judgment, and the difference between appearance and truth.

The Last Battle won the Carnegie Medal in 1957, recognizing it as the outstanding children's book of the previous year. It was the seventh Narnia novel released by Lewis.

The title can be confused with The Silver Chair, which is the sixth published Narnia book, or with The Magician's Nephew, which is first in many chronological editions. Regardless of reading order, The Last Battle remains the series finale.