List of Episodes/Season 421

The four-hundred-twenty-first season of SpongeBob Fanon premiered on January 28, 2484, and ended on March 4, 2485. It consists of 44 episodes (83 segments). The executive producer/showrunner for this season was TheLazyCat2020.
== List of episodes ==
Title Card	No.	No. inSeason	Title	Writer	Airdate
== Movie ==
Title Card	No.	No. inSeason	Title	Writer	Airdate
== Trivia ==
* "The Krabby Awards" is the first sequel episode to air on this season, that being "Employee of the Month."
* Colourado, which was a deleted episode from the previous season, is instead released for Season 421.
* This is the last season to be made in 2023.
* The title card of "Finterstellar" is misspelled.
* The Stupidest Crap on Roblox was aired just a day before the writer's birthday.
Category:List of Episodes