The third season of American animated television series Adventure Time, created by Pendleton Ward, originally aired on Cartoon Network in the United States. The series is based on a short produced for Frederator's Nicktoons Network animation incubator series Random! Cartoons. The season debuted on July 11, 2011, and the season finale was aired on February 13, 2012. The first episode of the season, "Conquest of Cuteness" was watched by 2.686 million viewers; this marked an increase in viewers watching Cartoon Network when compared to the previous season's debut. The season ended with the cliffhanger "Incendium", which was resolved at the start of season four. The season was met with largely positive critical reception. In addition, several episodes and writers were nominated for awards; the episode "Thank You" was nominated for an Annie Award as well as an award at the Sundance Film Festival. "Too Young" was nominated for an Emmy Award. Storyboard artist Rebecca Sugar was also nominated for an Annie Award. The tenth episode, however, garnered controversy from some parties because of an implied past lesbian relationship between Marceline and Princess Bubblegum. Several compilation DVDs that contained episodes from the season were released after the season finished airing. The season was storyboarded and written by Ako Castuera, Tom Herpich, Adam Muto, Sugar, Jesse Moynihan, Bert Youn, Kent Osborne, Somvilay Xayaphone, Pendleton Ward, and Natasha Allegri while being produced by Cartoon Network Studios and Frederator Studios. The series is rated TV-PG.

Cartoon Network's first on-air logo used from 1992 to 2004.

• September 2, 2001 – Adult Swim (logo pictured), a programming block from its Turner sister cable channel Cartoon Network, is initiated.
• September 2, 2001 – The Brak Show (2001-2003), Harvey Birdman, Attorney at Law (2001-2007) and Sealab 2021 (2001-2005) debuts on Cartoon Network's Adult Swim block
• September 6, 2010 – Regular Show, created by J. G. Quintel debuts on Cartoon Network (2010-2017)
• September 9, 2001 – Aqua Teen Hunger Force debuts on Cartoon Network's Adult Swim block (2001-2015)
• September 14, 2007 – Out of Jimmy's Head, a live-action/animated television series debuts on Cartoon Network (2007-2008)
• September 17, 2010 – Sym-Bionic Titan, created by Genndy Tartakovsky debuts on Cartoon Network (2010-2011)

• ...that Snake 'n' Bacon are a pair of cartoon characters, a snake and a strip of bacon, whose conversations are limited to hissing (on Snake's part) and making bacon-related comments (on Bacon's part)?
• ...that the Foster's Home for Imaginary Friends special "Destination: Imagination" won the Primetime Emmy Award for "Outstanding Animated Program (for Programming One Hour or More)" in 2009?
• ...that Ed, Edd n Eddy's TV movie series finale, Ed, Edd n Eddy's Big Picture Show, premiered on November 8, 2009, and achieved high ratings success for Cartoon Network?

Main project

WikiProject Cartoon Network

Task forces

Adult Swim • Aqua Teen Hunger Force • Ben 10 • Ed, Edd n Eddy

Parent projects

WikiProject Animation • WikiProject Television

Related projects

WikiProject Film • WikiProject Video games • WikiProject Music • WikiProject Comics