Assassin's Creed is a historical action-adventure video game series and media franchise published by Ubisoft and developed mainly by its studio Ubisoft Montreal using the game engine Anvil and its more advanced derivatives. Created by Patrice Désilets, Jade Raymond, and Corey May, the Assassin's Creed video game series depicts a fictional millennia-old struggle between the Order of Assassins, who fight for peace and free will, and the Knights Templar, who desire peace through order and control. The series features historical fiction, science fiction, and fictional characters intertwined with real-world historical events and historical figures. In most games, players control a historical Assassin while also playing as an Assassin Initiate or someone caught in the Assassin–Templar conflict in the present-day framing story. Considered a spiritual successor to the Prince of Persia series, Assassin's Creed took inspiration from the novel Alamut by the Slovenian writer Vladimir Bartol, based on the historical Hashashin sect of the medieval Middle East.

Ubisoft Entertainment SA is a French video game publisher headquartered in Saint-Mandé with development studios across the world. Its video game franchises include Assassin's Creed, Driver, Far Cry, For Honor, Just Dance, Prince of Persia, Rabbids, Rayman, Tom Clancy's, and Watch Dogs.