Palladium Books (sometimes called "Palladium Games") is a role-playing game publisher founded by Kevin Siembieda and Erick Wujcik, best known for their popular, genre-crossing Rifts gaming series (1990-present). Although not created to be a universal system, they were one of the first companies to have success creating role-playing games in multiple genres. This is why Palladium Books' house system is sometimes called "Megaversal" - "not universal, but more than just one world." However, the Palladium Weapon Compendiums are created to be universal, i.e. used for any role-playing game system.

Palladium Books is based in Westland, Michigan. Their first game was The Mechanoid Invasion in 1981, followed by the Palladium Fantasy Role-Playing Game in 1983 and Heroes Unlimited in 1984. Other popular titles included the role playing game adaptations of Teenage Mutant Ninja Turtles (1985) and the American animated series Robotech.

Palladium was also one of the major distributors of Robotech merchandise for several years. Between the late 1990s and early 2000s, all of Palladium's licenses lapsed and were not pursued for renewal. In September 2007, Palladium finalized negotiations on an RPG based on Robotech's Shadow Chronicles.

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