T. rex Kingdom, code named Paddock 9, was the enclosure for the Tyrannosaurus rex named Rexy, who was originally created for the failed Jurassic Park, in the Jurassic World park on Isla Nublar. It is one of the park's most popular attractions. Feeding is every two hours. They feed her goats and attract her with flares so guests can see her eat in a log-like viewing area for safety and a good view. Visitors can also choose to view her in an upper seating area at the top of the arena. Visitors can assist in the feeding of the Tyrannosaurus by purchasing the Adrenaline Package or possibly the Apex Predator Package.
The T. rex Kingdom appears in the level "Main Street Showdown" nearly identically to its appearance in the film Jurassic World. For comedic purposes, when the doors to the paddock are opening a Compsognathus riding a pig runs out of the enclosure.