The eighth season of the American animated television series SpongeBob SquarePants, created by former marine biologist and animator Stephen Hillenburg, originally aired on Nickelodeon in the United States from March 26, 2011, to December 6, 2012, and contained 26 half-hour episodes, with a miniseries titled SpongeBob's Runaway Roadtrip. The series chronicles the exploits and adventures of the title character and his various friends in the fictional underwater city of Bikini Bottom. The season was executive produced by series creator Hillenburg and writer Paul Tibbitt, who also acted as the showrunner. In 2011, SpongeBob's Runaway Roadtrip, an anthology series consisting of five episodes from the season, was launched.

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.