The Moon's a Balloon is a best-selling memoir by British actor David Niven (1910–1983), published in 1971.

There have been several editions and many translations of the book over the years.

Niven followed it with a sequel, Bring on the Empty Horses, in 1975.

The book has been described as "a funny yet tragic tale, detailing everything from the loss of Niven's father to his knowledge of how to lead a good life".

This article about a biographical or autobiographical book on an actor is a stub.