For the unrelated theme park in Australia, see Sea World.

SeaWorld is a chain of theme parks in the United States, with operations in Orlando, Florida, San Diego, California, and San Antonio, Texas. The parks feature killer whale, sea lion and dolphin shows and zoological displays featuring various other marine animals. The parks' icon is Shamu the killer whale.

SeaWorld parks also feature a variety of thrill rides, including roller coasters like Kraken at SeaWorld Orlando and The Steel Eel at SeaWorld San Antonio. Journey To Atlantis, a combination roller coaster and splashdown ride, can be found at both SeaWorld Orlando and SeaWorld San Diego. The parks are owned by Busch Entertainment Corp., the family entertainment division of Anheuser-Busch, which is best known for brewing beer but also owns nine theme parks.

One of the biggest attractions is the Shark Encounter, in which guests are carried through a submerged acrylic tube into the sharks' tank.