Atlantis Marine Park, Amusement park in Two Rocks, Western Australia.

Atlantis Marine Park was a theme park in Two Rocks, 60 km north of Perth, opened in 1981 and closed in 1990. It had dolphin, seal and sea lion shows, a penguin exhibit, an aquarium with turtles, rays and sharks, a water park with pools and slides, a pedalo ride, a sea serpent-themed roller coaster and three restaurants. A 10-metre limestone King Neptune by Mark Le Buse overlooked the grounds, and a clock marked the hours with limestone heads of celebrities.

The park opened in 1981 and offered visitors dolphin performances and marine exhibits. New regulations in 1988 made operating the facility harder, leading to the park's closure in 1990.

The 10-metre limestone King Neptune, carved by American sculptor Mark Le Buse, was heritage-listed by the Heritage Council of Western Australia in 2006 and restored with its surroundings reopened to the public in May 2015. Le Buse also made a disembodied head of Jacques Cousteau and a clock whose hours were marked by celebrity heads including Prince Charles, Princess Diana, Charlie Chaplin, The Beatles, Elvis Presley and John Wayne.

The park site is at Two Rocks, about 60 km north of Perth. The King Neptune sculpture and its surroundings reopened to the public in May 2015 after restoration. Much of the former park land has since been cleared for redevelopment, and the Two Rocks Village shopping centre opened on part of it in June 2026.

Three of the nine dolphins recaptured during the 1991–92 release were never returned to the wild; they were moved to Underwater World, now the Aquarium of Western Australia, where all three died suddenly in December 1999. Tests found two had been poisoned, but the source was never identified.