SpongeBob's Truth or Square is a 2009 made-for-television comedy television film and an hour-long episode of the American animated television series SpongeBob SquarePants that was produced as the 123rd and 124th episodes of the series. The special originally aired on Nickelodeon in the United States on November 6, 2009, celebrating the tenth anniversary of the television series. This is the second SpongeBob SquarePants television film, following SpongeBob's Atlantis SquarePantis. Its animation was directed by supervising director Alan Smart, Andrew Overtoom and Tom Yasumi.

SpongeBob SquarePants is an American animated television series created by marine science educator and animator Stephen Hillenburg that aired on Nickelodeon as a sneak peek after the 1999 Kids' Choice Awards on May 1, 1999, and officially premiered on July 17, 1999. It chronicles the adventures of the title character and his aquatic friends in the underwater city of Bikini Bottom. The series received worldwide critical acclaim, and has gained popularity by its second season. As of 2019, the series is the fifth-longest-running American animated series. Its popularity made it a multimedia franchise, the highest rated Nickelodeon series, and the most profitable intellectual property for Paramount Consumer Products. By 2019, it had generated over $13 billion in merchandising revenue.