Rex Mundi is Latin for King of the World.
Rex Mundi may also refer to:
Rex Mundi (comics), an American comic book series Rex Mundi (Malibu Comics), a fictional character in Malibu Comics' Ultraverse imprint Rex Mundi High School, a former Catholic high school in Evansville, Indiana, USA Rex Mundi, a DJ signed to Armada Music The evil God in Cathar cosmology
See also King of the World (disambiguation)