Previous Year: 2004 Next Year: 2006
2005 (MMV) was a common year of the Gregorian calendar that started on a Saturday. No new episodes aired until May 6, due to rumors that the show would end. After Good Neighbors, no episodes aired untilSelling Out, which aired on September 23, 2005.
Only 13 episodes aired this year.
- January 1 - The SpongeBob SquarePants Movie is released in theatres in Columbia.
- January 6 - The SpongeBob SquarePants Movie is released in theatres in Australia, New Zealand, and Argentina.
- January 7 - The SpongeBob SquarePants Movie is released in theatres in Central America.
- January 13 - The SpongeBob SquarePants Movie is released in theatres in Peru.
- January 28 - The SpongeBob SquarePants Movie is released in theatres in Spain.
- February 2 - The SpongeBob SquarePants Movie is released in theatres in Belgium.
- February 3 - The SpongeBob SquarePants Movie is released in theatres in the Netherlands.
- February 9 - The SpongeBob SquarePants Movie is released in theatres in France.
- February 11 - The SpongeBob SquarePants Movie is released in theatres in the United Kingdom and Ireland.
- March 1 - The SpongeBob SquarePants Movie is released on DVD in the United States.
- March 11 - The SpongeBob SquarePants Movie is released in theatres in Austria.
- March 13 - The SpongeBob SquarePants Movie is released in theatres in Turkey.
- March 17 - The SpongeBob SquarePants Movie is released in theatres in Russia, Singapore, and the Czech Republic.
- April 6 - The SpongeBob SquarePants Movie is released in theatres in the Philippines.
- April 8 - The SpongeBob SquarePants Movie is released in theatres in South Africa.
- April 16 - The SpongeBob SquarePants Movie is released in theatres in Indonesia.
- May 6 - Fear of a Krabby Patty and Shell of a Man premiered.
- May 13 - The Lost Mattress and Krabs vs. Plankton premiered.
- May 20 - Skill Crane and Good Neighbors premiered.
- June 10 - The SpongeBob SquarePants Movie is released in theatres in Denmark.
- June 17 - The SpongeBob SquarePants Movie is released in theatres in Norway.
- June 26 - The SpongeBob SquarePants Movie is released in theatres in Sweden.
- September 16 - The SpongeBob SquarePants Movie is released in theatres in Greece.
- September 23
- Selling Out premiered.
- The SpongeBob SquarePants Movie is released in theatres in Italy.
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- Funny Pants premiered.
- The SpongeBob SquarePants Movie is released in theatres in South Korea.
- October 7 - Mermaid Man and Barnacle Boy VI: The Motion Picture premiered.
- October 14 - Enemy In-Law premiered.
- October 21 - Patrick SmartPants premiered.
- October 26 - Nicktoons Unite! was released on PS2, Game Boy Advance, and Game Cube in North America.
- November 4 - SquidBob TentaclePants premiered.
- November 11 - Have You Seen This Snail? premiered.