Muramasa (disambiguation)

Muramasa Sengo was a famous Japanese swordsmith.

Muramasa may also refer to:

• Muramasa: The Demon Blade, the 2009 video game by Vanillaware.
• Muramasa, one of the primary antagonists of the Zanpakutō Unknown Tales arc, Muramasa is a mysterious former zanpakutō responsible for causing a full-scale Zanpakutō Rebellion to take place within the Soul Society, in the hopes of finding a way to unseal his master from his prison.