2015 was a common year starting on Thursday of the Gregorian calendar.
| Date | Event(s) | |
|---|---|---|
| January 5 | The Day of Positivity happened in the US. "Squeeze Me" was released on iTunes. Thank Gosh It's Monday premiered. | |
| January 6 | The Pilot a Mini-Movie and the Square Shorts was released. | |
| January 7 | SpongeBob Bubble Party was released. | |
| January 13 | The Triple Pack 3 was released. | |
| January 14 | SpongeBob Comics No. 40 was released. "License to Milkshake" and "Squid Baby" premiered in Latin America. | |
| January 22 | The first clip of The SpongeBob Movie: Sponge Out of Water was released online. The SpongeBob Movie Game: Sponge on the Run was released. | |
| January 27 | The "Music from The SpongeBob Movie: Sponge Out of Water" album was released. The second clip of The SpongeBob Movie: Sponge Out of Water was released online. | |
| January 28 | The SpongeBob Movie: Sponge Out of Water was released in Belgium and the Netherlands. The third clip of The SpongeBob Movie: Sponge Out of Water was released online. | |
| January 29 | The fourth clip of The SpongeBob Movie: Sponge Out of Water was released online. | |
| January 30 | The SpongeBob Movie: Sponge Out of Water was released in Iceland, Mexico, and Taiwan. the fifth of The SpongeBob Movie: Sponge Out of Water was released online. | |
| February 2 | A featurette for The SpongeBob Movie: Sponge Out of Water was released. | |
| February 3 | SpongeBob HeroPants was released. The sixth and the seventh clips of The SpongeBob Movie: Sponge Out of Water were released online. | |
| February 4 | The eighth and ninth clips of The SpongeBob Movie: Sponge Out of Water were released online. | |
| February 5 | The SpongeBob Movie: Sponge Out of Water was released in Argentina, Aruba, Brazil, Chile, Colombia, Denmark, Peru, and Ukraine. | |
| February 6 | The SpongeBob Movie: Sponge Out of Water was released in Canada, Spain, Kenya, Romania, Turkey, and the United States. Brazil 1, Brazil 2, Mexico 1, Mexico 2, Spain 1, Spain 2, Russia 1, and Russia 2 premiered. | |
| February 7 | The SpongeBob Movie Game: Sponge on the Run was updated for the first time. | |
| February 10 | France 1 and France 2 premiered. | |
| February 11 | SpongeBob Comics No. 41 was released. | |
| February 12 | The SpongeBob Movie: Sponge Out of Water was released in Azerbaijan, Hungary, Kazakhstan, Portugal, and Russia. Germany 1 and Germany 2 premiered. | |
| February 13 | The SpongeBob Movie: Sponge Out of Water was released in Pakistan. | |
| February 18 | The SpongeBob Movie: Sponge Out of Water was released in France. "Bumper to Bumper" premiered in Latin America. | |
| February 19 | The SpongeBob Movie: Sponge Out of Water was released in Austria, Czech Republic, Germany, Greece, Hong Kong, Iraq, Italy, and Kuwait. SpongeBob Bubble Party was updated for the first time. | |
| February 20 | The SpongeBob Movie: Sponge Out of Water was released in Bulgaria, Cambodia, Norway, Poland, and Sweden. | |
| February 23 | "Patrick-Man!" premiered in Germany and Poland. "Evil Spatula" premiered in Italy. | |
| February 24 | "Gary's New Toy" premiered in Germany and Poland. "Safe Deposit Krabs" premiered in Italy. | |
| February 25 | "License to Milkshake" premiered in Germany and Poland. "Plankton's Pet" premiered in Italy. | |
| February 26 | "Squid Baby" premiered in Germany and Poland. "Kenny the Cat" premiered in Italy. | |
| February 27 | The SpongeBob Movie: Sponge Out of Water was released in Finland. "Eek, an Urchin!" premiered in Germany and Poland. "Yeti Krabs" premiered in Italy. | |
| March 1 | Fish Food Rescue: The Krusty Krab premiered. | |
| March 2 | UK 1 premiered. "Squid Defense" premiered in Germany and Poland. | |
| March 3 | "Safe Deposit Krabs" premiered in Germany and Poland. | |
| March 4 | The SpongeBob Movie Game: Sponge on the Run was updated for the second time. "Plankton's Pet" premiered in Germany and Poland. | |
| March 5 | The SpongeBob Movie: Sponge Out of Water was released in Singapore. "Yeti Krabs" premiered in Germany. "Kenny the Cat" premiered in Poland. | |
| March 6 | The SpongeBob Movie: Sponge Out of Water was released in Lithuania and Latvia. "Kenny the Cat" premiered in Germany. "Yeti Krabs" premiered in Poland. | |
| March 9 | UK 2 premiered. | |
| March 11 | SpongeBob Comics No. 42 was released. | |
| March 17 | The tenth clip of The SpongeBob Movie: Sponge Out of Water was released online. | |
| March 19 | The SpongeBob Movie: Sponge Out of Water was released in Malaysia. | |
| March 20 | "Safe Deposit Krabs" and "Plankton's Pet" premiered in Latin America. | |
| March 24 | The SpongeBob Movie: Sponge Out of Water soundtrack was released in digital form. | |
| March 27 | The SpongeBob Movie: Sponge Out of Water was released in the United Kingdom and Ireland. | |
| March 29 | "Yeti Krabs" premiered. "Jailbreak!" and "Evil Spatula" premiered in Poland. | |
| March 30 | "Jailbreak!" and "Evil Spatula" premiered in Russia. | |
| March 31 | The SpongeBob Movie: Sponge Out of Water soundtrack was released on CD. Australia 1 and Australia 2 premiered. | |
| April 1 | "Jailbreak!" premiered in Italy. | |
| April 2 | The SpongeBob Movie: Sponge Out of Water was released in Australia and New Zealand. | |
| April 4 | The SpongeBob Movie: Sponge Out of Water was released in the Philippines. | |
| April 6 | "Patrick-Man!" premiered in Eastern Europe. | |
| April 7 | "Gary's New Toy" premiered in Eastern Europe. | |
| April 8 | The SpongeBob Movie: Sponge Out of Water was released in Indonesia. SpongeBob Comics No. 43 was released. "License to Milkshake" premiered in Eastern Europe. | |
| April 9 | The SpongeBob Movie: Sponge Out of Water was released in Thailand. "Squid Baby" premiered in Eastern Europe. | |
| April 10 | The SpongeBob Movie: Sponge Out of Water was released in Estonia. "Eek, an Urchin!" premiered in Eastern Europe. | |
| April 18 | "Kenny the Cat" premiered in Southeast Asia. "It Came From Goo Lagoon" premiered in Germany and Poland. | |
| April 23 | The SpongeBob Movie: Sponge Out of Water was released in Croatia. | |
| April 27 | "Jailbreak!" and "Evil Spatula" premiered in Latin America. | |
| April 28 | The Museum of Cartoon Sponges premiered. | |
| May 1 | The SpongeBob SquarePants Series became 16 years old. | |
| May 2 | SpongeBob Comics Freestyle Funnies 2015 was released. | |
| May 7 | The Adventures of SpongeBob SquarePants was released in Germany. | |
| May 13 | SpongeBob Comics No. 44 and SpongeBob's Game Frenzy were released. | |
| May 14 | "Eek, an Urchin!" and "Squid Defense" premiered in Latin America. | |
| May 16 | The SpongeBob Movie: Sponge Out of Water was released in Japan. | |
| May 18 | The extended version of Thank Gosh It's Monday premiered. | |
| May 19 | The SpongeBob Movie: Sponge Out of Water was released on Digital HD. | |
| May 23 | SpongeBob SubPants Adventure opened. | |
| May 31 | "Kenny the Cat" and "Yeti Krabs" premiered in Russia. | |
| June 2 | The SpongeBob Movie: Sponge Out of Water DVD, the SpongeBob Movie: Sponge Out of Water Blu-ray and the Triple Pack 4 were released. | |
| June 8 | Plankton. A Thank You Would Be Nice. premiered. | |
| June 10 | SpongeBob Comics No. 45 was released. | |
| June 17 | The SpongeBob Comics Annual-Size Super-Giant Swimtacular #3 was released. | |
| June 21 | You Know You're From Bikini Bottom When... premiered. | |
| June 24 | The Adventures of SpongeBob SquarePants was released in Australia. | |
| June 26 | SpongeBob's Game Frenzy was updated for the first time. "Don't Look Now" and "Séance Shméance" premiered in Latin America. | |
| July 3 | SpongeBob's Game Frenzy was updated for the second time. | |
| July 7 | The Adventures of SpongeBob SquarePants was released in the UK. | |
| July 8 | SpongeBob Comics No. 46 was released. | |
| July 9 | "Once Bitten" premiered in Poland. | |
| July 11 | "Safe Deposit Krabs" and "Plankton's Pet" premiered in Russia. | |
| July 16 | "Lost in Bikini Bottom" and "Tutor Sauce" premiered. Super Brawl 4 was released on Nick.com | |
| July 29 | The SpongeBob Movie Game: Sponge on the Run was updated for the third time. | |
| July 30 | SpongeBob's Game Frenzy was updated for the third time. | |
| August 4 | "Hocus Pocus" premiered in Poland. | |
| August 6 | Bikini Bottom's Most Wanted was released in Germany. | |
| August 12 | SpongeBob Comics No. 47 was released. | |
| August 19 | SpongeBob's Game Frenzy was updated for the fourth time. | |
| August 22 | "Kenny the Cat" premiered in Latin America. | |
| August 29 | "Yeti Krabs" premiered in Latin America. | |
| August 31 | "Lost in Bikini Bottom" and "Tutor Sauce" premiered in Israel. | |
| September 5 | "Driven to Tears" premiered in Poland. "Tutor Sauce" premiered in Germany and Poland. | |
| September 7 | "Squid Plus One" and "The Executive Treatment" premiered. | |
| September 9 | Bikini Bottom's Most Wanted was released in Australia. SpongeBob Comics No. 48 was released. | |
| September 12 | "Tutor Sauce" premiered in Russia. | |
| September 18 | "Pull Up a Barrel" premiered. "Lost in Bikini Bottom" premiered in Russia. | |
| September 22 | The Adventures of SpongeBob SquarePants was released in the United States. SpongeBob Bubble Party was updated for the second time. | |
| September 24 | Doodle Jump SpongeBob SquarePants was updated for the third time. | |
| September 25 | "Company Picnic" premiered. | |
| October 2 | "What's Eating Patrick?" premiered. | |
| October 5 | "Squid Defense" premiered in Eastern Europe. | |
| October 6 | "Super Evil Aquatic Villain Team Up is Go!" premiered in Eastern Europe. | |
| October 7 | "Chum Fricassee" premiered in Eastern Europe. | |
| October 8 | "The Good Krabby Name" premiered in Eastern Europe. | |
| October 9 | "Move It or Lose It" premiered in Eastern Europe. | |
| October 10 | "Tutor Sauce" premiered in Latin America. | |
| October 12 | The SpongeBob SquarePants crew began production of season 10. "Extreme Spots" premiered in Eastern Europe. | |
| October 13 | "Squirrel Record" premiered in Eastern Europe. | |
| October 14 | SpongeBob Comics No. 49 was released. "It Came from Goo Lagoon" premiered in Eastern Europe. | |
| October 15 | "Safe Deposit Krabs" premiered in Eastern Europe. | |
| October 16 | "Sanctuary!" premiered. "Plankton's Pet" premiered in Eastern Europe. | |
| October 19 | "Don't Look Now" premiered in Eastern Europe. | |
| October 20 | "Séance Shméance" premiered in Eastern Europe. | |
| October 21 | "Kenny the Cat" premiered in Eastern Europe. | |
| October 22 | "Yeti Krabs" premiered in Eastern Europe. | |
| October 23 | "Hello Bikini Bottom!" premiered in Eastern Europe. | |
| November 5 | "Jailbreak!" and "Evil Spatula" premiered in Canada. | |
| November 7 | "Squid Plus One" premiered in Russia. | |
| November 9 | "Company Picnic" premiered in Latin America. | |
| November 10 | "Pull Up a Barrel" premiered in Latin America. | |
| November 11 | SpongeBob Comics No. 50 was released. "Patrick! The Game" and "The Sewers of Bikini Bottom" premiered. "Squid Plus One" premiered in Latin America. | |
| November 12 | "It Came from Goo Lagoon" premiered in Canada. "The Executive Treatment" premiered in Latin America. | |
| November 13 | "Lost in Bikini Bottom" premiered in Latin America. | |
| November 14 | "The Executive Treatment" premiered in Russia. | |
| November 16 | "Lost in Bikini Bottom" premiered in Germany and Poland. | |
| November 17 | "Squid Plus One" premiered in Germany. "The Executive Treatment" premiered in Poland. | |
| November 18 | "The Executive Treatment" premiered in Germany. "Squid Plus One" premiered in Poland. | |
| November 19 | "Company Picnic" premiered in Germany. "Pull Up a Barrel" premiered in Poland. | |
| November 20 | "Pull Up a Barrel" premiered in Germany. "Company Picnic" premiered in Poland. | |
| November 21 | "Company Picnic" premiered in Russia. | |
| November 28 | "Pull Up a Barrel" premiered in Russia. | |
| December 9 | SpongeBob Comics No. 51 was released. | |
| December 28 | "The Gift of Gum" premiered in Poland. | |