Fallen could refer to:

• The Fallen, originally known as "Megatronus Prime", a multiversal singularity and one of the Thirteen original Transformers from The War Within: The Dark Ages.

• The Fallen, one of the Seven Primes and the founder of the Decepticons from the live-action film continuity family.

• "Fallen", an episode from the Galaxy Force / Cybertron anime.

The Fallen should not be confused with other things start with the word "Fallen".