SpongeBob SquarePants season 4

The fourth season of the American animated television series SpongeBob SquarePants, created by former marine biologist and animator Stephen Hillenburg, aired on Nickelodeon from May 6, 2005, to July 24, 2007, and contained 20 half-hour episodes. The series chronicles the 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, while writer Paul Tibbitt acted as the supervising producer and showrunner. Starting with this season, Hillenburg, who left his role as showrunner following production on the first film, took on a smaller advisory role, where the production crew would receive feedback from him during production of episodes.

The show itself received several recognitions, including the three Kids' Choice Awards for Favorite Cartoon from 2005 to 2007. "Fear of a Krabby Patty" and "Shell of a Man" were nominated at the 57th Primetime Emmy Awards for Outstanding Animated Program (for Programming Less Than One Hour). It also received a nomination for "Bummer Vacation" and "Wigstruck" at the 59th Primetime Emmy Awards for the same category.

Several compilation DVDs that contained episodes from the season were released. The SpongeBob SquarePants: Season 4, Volume 1 and 2 DVDs were released in Region 1 on September 12, 2006, and January 9, 2007, respectively, while the complete set was released in Region 2 on November 3, 2008, and Region 4 on November 7, 2008. The second volume was released in Region 1 before several episodes aired in the United States. On November 13, 2012, The Complete Fourth Season DVD was released in Region 1.