The 6th season (also known as the 2009 Halloween Season) of episodes is part of the Halloween/Harvest October event seen here. It started with "Anchovies Away" and ended with "Valentine's Day 2".
| Title Card | # | Title | Airdate |
| File:World's Spongeiest Record.jpg | "World's Spongiest Record" | August 22, 2013 | |
| SpongeBob tries to break a world record. | |||
| File:Fear of a Krabby Patty.jpg | "Fear of a Krabby Patty 2" | September 4, 2013 | |
| After eating 9000 Krabby Patties, SNIT fears the sandwich. (Sequel to Fear of a Krabby Patty.) | |||
| File:Best Friends Forever.jpg | "Best Friends Forever" | September 4, 2013 | |
| After Plankton gets burnt by SpongeBob's grill, he goes to the hospital and SpongeBob loves him because they're best friends forever. | |||
| File:Triple.jpg | "Triple your Fun!" | September 10, 2013 | |
| Patrick accidentally creates 3 clones of him! | |||
| File:Goo.png | "Piccolo VS. Squilliam" | September 10, 2013 | |
| After Piccolo gets jeaulous of Squilliam,they both fight,but the cops have to break it up. | |||
| File:Crazy.jpg | "Crazy Fred" | October 31, 2013 | |
| On Halloween,Fred goes CRAZY! | |||
| File:SupremeScore.jpg | "Sandy's Supreme Score" | September 17, 2013 | |
| Sandy becomes famous after being the best soccer player in Bikini Bottom, but forgets about her friends. | |||
| File:Para-Sight.jpg | "Para-Sight" | September 17, 2013 | |
| SpongeBob becomes afraid of every bug. | |||
| File:Land.jpg | "Imaginationland" | September 24, 2013 | |
| SpongeBob wants to ride on the Helicopter. | |||
| File:Land2.jpg | "Imaginationland Episode II" | September 24, 2013 | |
| After Squidward was injured from Manbearpig's attack, he is brought back to life, and SpongeBob must stop Manbearpig. | |||
| File:Krashed Krab.jpg | "Krashed Krab" | September 30, 2013 | |
| Mr. Krabs gets too much money and clashes his office. | |||
| File:The Curse on a Sponge.jpg | "The Curse on a Sponge" | September 30, 2013 | |
| Mr. Krabs is jealous of Spongebob's diamond so he pretends to curse him. | |||
| File:Squid's Guide.jpg | "Squid's Guide" | September 30, 2013 | |
| Squidward creates a guide on clairinets. | |||
| File:Patties Galore.jpg | "Patties Galore" | September 30, 2013 | |
| Spongebob makes too many Krabby Patties. | |||
| File:My Name's Not Rick!.jpg | "My Name's Not Rick!" | September 30, 2013 | |
| Patrick is mistaken for Rick one too many times... | |||
| File:Tree in the Water.jpg | "Tree in the Water" | September 30, 2013 | |
| Sandy's treedome breaks! | |||
| File:Fairwell.jpg | "The Fairwell" | October 7, 2013 | |
| Mr. Krabs resists anybody to enter the carnival unless they put a quarter in a waterhole. | |||
| File:Moooove.jpg | "Mooooove Out" | October 7, 2013 | |
| Uncle Sherm's cows go on a rampage in Bikini Bottom. | |||
| File:Farewell.jpg | "Mr. Krabs' Farewell" | January 6, 2013 | |
| Mr. Krabs can't afford the Krusty Krab's debt and fines and shuts it down. | |||
| File:Patties.jpg | "A Million Patties" | January 10, 2013 | |
| A Monster threatens to eat Mr. Krabs and Squidward if Sponge Bob doesn't make a Million Patties in 24 hours! (Takes place before ep. 111) | |||
| File:Sold!.JPG | "Sold!" | January 11, 2013 | |
| Plankton buys the Krusty Krab! | |||
| File:Inkheart.jpg | "Inkheart" | January 11th, 2013 | |
| Spongebob goes inside Squidward's body to "brighten" his heart. | |||
| File:Clone Crazy.jpg | "Clone Crazy" | Novmeber 12th, 2013 | |
| Patrick wants to be cloned. | |||
| File:Cheap.jpg | "Moe the Cheap" | January 10,2013 | |
| When Moe (from The Legend of Starfy) senses and steals all of Mr. Krab's money, Mr. Krabs goes nutss and teams up with Starfy to get it back. | |||
| File:Goober.jpg | "Gary Goes Goober" | September 4,2013 | |
| Gary becomes a Goofy Goober. | |||
| File:Leaving.jpg | "Leaving?" | October 1, 2013 | |
| Patrick decides to leave Bikini Bottom. Can SpongeBob convince him not to? | |||
| File:Invention.jpg | "Sandy's Invention" | October 7, 2013 | |
| Sandy makes a robot. | |||
| File:Bets.jpg | "All Bets Are Off!" | March 18, 2013 | |
| SpongeBob, Patrick, Sandy, Mr. Krabs and Plankton bet each other on their habits to see who can get the Triple Goober-Berry Sundae recipe. | |||
| File:Anchovies-Away.jpg | "Anchovies Away" | August 13th, 2013 | |
| The anchovies return! | |||
| File:Sponge-Trip.jpg | "Sponge Trip" | August 13th, 2013 | |
| Mrs. Puff's Boating School goes on a field trip. | |||
| File:Konfess.jpg | "Krab's Konfess" | August 14th, 2013 | |
| Mr. Krabs reveals why he likes money. | |||
| File:GenderSwitch.JPG | "Gender Switch" | August 14, 2013 | |
| SpongeBob and Sandy switches genders,now can "Sandy" fix the machine and turn them back to normal? | |||
| File:Team01.jpg | "S.P.D. Punks" | August 19, 2013 | |
| Plankton mind controls Space Patrol Delta to steal the Krabby Patty Secret Formula! Will Mermaid Man and Barnacle Boy save the day? | |||
| File:Tennis.jpg | "Tennis Squidward" | August 14, 2013 | |
| Squidward tries out tennis. | |||
| File:SpongeBob Vs. Patrick.jpg | "SpongeBob Vs. Patrick" | August 13, 2013 | |
| SpongeBob and Patrick fight, but the cops have to break it up. | |||
| File:Evil-Bug-On-The-Loose.jpg | "Evil Bug on the Loose" | October 31st, 2013 | |
| When SpongeBob wishes Squidward wasn't so mean, Squidward's Evil Bug goes loose biting everyone in the city! | |||
| File:Boo.jpg | "Boo!" | October 31st, 2013 | |
| It's Halloween again, and SpongeBob got the scariest costume in the store. | |||
