Rex is a Latin name that means king or ruler. Rex has been used as a given name since ancient times, and has been popularized in various cultures throughout history. Rex is also a common name for dogs, particularly golden retrievers. In paleontology, Rex is a suffix used to describe a species of dinosaur, such as the Tyrannosaurus Rex, which means king of the tyrant lizards. Rex is a name associated with power, authority, and strength, making it a popular choice for characters in fiction, such as superheroes or villains. Rex can also be used as a shortened form of other names that start with R, such as Reginald or Richard. Rex has been used as a surname, as well as a first name, and can be found in various cultures and languages. Rex has a strong, masculine sound, which has made it a popular choice for parents looking for a distinctive and powerful name for their son. Rex has been used in various expressions and idioms, such as rex magnus (great king) and rex imperator (emperor king). Rex has been featured in various forms of media, such as movies, TV shows, and books, and has become a recognizable and iconic name in popular culture.

The root form of Rex is Rex — meaning King.

Rex remains a beloved choice, ranking #34 in the US. Timeless appeal across cultures and generations.