2021 is a common year starting on Friday of the Gregorian calendar. This year the third movie (The SpongeBob Movie: Sponge on the Run) will be released digitally in the United States on March 4, due to the COVID-19 pandemic.

Date Event(s)
Unknown date The SpongeBob Movie: Sponge on the Run will be released in Finland.
Unknown date Kamp Koral: SpongeBob's Under Years will premiere in Central & Eastern Europe.
Unknown date Kamp Koral: SpongeBob's Under Years will premiere on Nickelodeon.
Unknown date "SpongeBob SquarePants Christmas Special (2021)" will premiere.
January 10 "The SpongeBob SportsPants Countdown Special" premiered.
A sneak peek for "Kamp Koral: SpongeBob's Under Years" was shown.
January 12 The Complete Twelfth Season was released.
January 15 "Krusty Koncessionaires" and "Dream Hoppers" premiered in Latin America.
January 16 "Who R Zoo?" premiered in Germany, Austria, and Switzerland.
"The Krusty Slammer" and "Pineapple RV" premiered in Japan.
January 17 "Hiccup Plague" premiered in Germany.
"Dream Hoppers" premiered in Austria and Switzerland.
January 18 "Lighthouse Louie" and "My Two Krabses" premiered.
An exclusive look at "The SpongeBob Movie: Sponge on the Run" was shown.
January 21 Battle for Bikini Bottom - Rehydrated was released on the App Store and Google Play.
January 23 "Plankton's Old Chum" and "Stormy Weather" premiered in Japan.
January 29 "Jolly Lodgers" premiered in Greece.
January 30 "Swamp Mates" and "One Trick Sponge" premiered in Japan.
February 2 The SpongeBob Movie: Sponge on the Run DVD and Blu-ray were released in Canada.
The SpongeBob 3-Movie Collection was released in Canada.
February 6 "The SpongeBob SportsPants Countdown Special" premiered in Canada.
"Krusty Koncessionaires" officially premiered in Germany.
"Dream Hoppers" premiered in Germany.
"Krusty Koncessionaires" premiered in Austria and Switzerland.
"The Krusty Bucket" and "Squid's on a Bus" premiered in Japan.
February 7 "Shell Games" officially premiered in Russia.
February 11 "Boss for a Day," "The Goofy Newbie," "The Ghost of Plankton," and "My Two Krabses" premiered in Finland.
February 12 "Knock Knock, Who's There?," "Pat Hearts Squid," "Lighthouse Louie," and "Hiccup Plague" premiered in Finland.
February 13 "My Two Krabses" premiered in Canada.
"Sandy's Nutty Nieces" and "Insecurity Guards" premiered in Japan.
February 14 "My Two Krabses" and "Krusty Koncessionaires" premiered in Russia.
February 15 "Who R Zoo?" and "Kwarantined Krab" premiered in Finland.
February 16 "Plankton's Intern," "Patrick's Tantrum," "Bubble Bass's Tab," and "Kooky Cooks" premiered in Finland.
February 17 "Krusty Koncessionaires" and "Dream Hoppers" premiered in Finland.
February 21 "Dream Hoppers" premiered in Russia.
February 22 "Pineapple RV" premiered in Southeast Asia.
"Pineapple RV" officially premiered in South Africa, Iberia, Wallonia, Central & Eastern Europe, and Turkey.
February 23 "Jolly Lodgers" premiered in Central & Eastern Europe, Sweden, Denmark, Turkey, Iberia, and South Africa.
February 24 "Boss for a Day" premiered in South Africa.
"The Goofy Newbie" premiered in Central & Eastern Europe, Turkey, Iberia, and Wallonia.
February 25 "Swamp Mates" premiered in Turkey, Denmark, and South Africa.
"Swamp Mates" officially

premiered in Norway, Sweden, Southeast Asia, and Wallonia.

February 26 "One Trick Sponge" premiered in Turkey, Sweden, Denmark, and South Africa.
"One Trick Sponge" officially premiered in Norway, Southeast Asia, and Wallonia.
March 4 The SpongeBob Movie Game: Sponge on the Run will be updated with new content inspired by the third SpongeBob movie.
CBS All Access will be rebranded as Paramount+.
The SpongeBob Movie: Sponge on the Run will be released on VOD and Paramount+.
"The Jellyfish Kid" and the start of Kamp Koral: SpongeBob's Under Years will be released on Paramount+.
March 6 The SpongeBob Movie: Sponge on the Run will be released in Israel.
"Shell Games," "Jolly Lodgers," and "Pineapple RV" will officially premiere in France.
March 13 "Boss for a Day" will premiere in France.
March 20 "Krusty Koncessionaires," "Dream Hoppers," and "The Goofy Newbie" will premiere in France.
May 1 The SpongeBob SquarePants series will become 22 years old.
May 25 Kamp Koral Activity Book, Kamp Koral Joke Book, and Snack Attack! will be released.
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