SpongeBob's Atlantis SquarePantis is the first television film and the 92nd episode of the American animated television series SpongeBob SquarePants, and a 2007 made-for-television musical comedy film directed by Andrew Overtoom. It first aired on Nickelodeon in the United States on November 12, 2007, serving as the twelfth episode of the fifth season of the American animated television series SpongeBob SquarePants. In the special, SpongeBob and Patrick discover a half of an ancient medallion that helps them and their friends get to the lost city of Atlantis.

It was written by Casey Alexander, Zeus Cervas, Steven Banks, and Dani Michaeli. British musician and actor David Bowie guest starred as the voice of Lord Royal Highness. Upon release, it attracted an estimated 9.22 million viewers, becoming the most watched episode of the entire series. Despite this, it received mixed reviews from critics and audiences alike, while the Patchy subplot received mixed to negative reviews.