2011

In 2011, The Amazing World of Gumball premieres. The then upcoming series, Total Drama: Revenge of the Island, was put on hold due to the 2011 Tōhoku earthquake and tsunami, causing fragments to be edited for its airtime in 2012.

1

 * New Year's Day Movie Marathon aired from 7:00 AM to 9:00 PM.

3

 * Young Justice premiered.

14

 * Lego Ninjago: Masters of Spinjitzu Series pilot episodes "Way of the Ninja" and "King of Shadows" aired.

7

 * MAD renewed the second half of new episodes and moves to 8:15.
 * Regular Show moved to 8:30.

14

 * Looney Tunes returned regularly on Cartoon Network after 14 months.

1

 * Scaredy Squirrel made its US premiere.
 * Season Three of Star Wars: The Clone Wars ended.
 * The logo turned upside down for April Fools Day 2011.
 * Sym-Bionic Titan aired its final episode and series finale.

4

 * The Problem Solverz premiered
 * Cartoon Network Turkey has rebranded the CHECK it 1.0 look.

3

 * A sneak peek of The Amazing World of Gumball aired.
 * The second half of season one of Scooby-Doo! Mystery Incoporated premiered on May 3, 2011.
 * The Looney Tunes Show premieres on May 3, 2011.

9

 * The Amazing World of Gumball premiered.
 * Season Two of Adventure Time ended.
 * Regular Show moves back to 8:15
 * MAD moved back to 8:30

29

 * On May 29, 2011 Cartoon Network introduces a new theme and slogan titled "YEEEAUHHHH!" though it did not replace the CHECK it era.

4

 * Jungle Weekend aired from the same day until June 5th.

13

 * Sidekick and Almost Naked Animals had their US debuts.
 * Season Five of Johnny Test premiered.

5

 * 2 Stupid Dogs reruns returned to Cartoon Network for the first time in ten years.

11

 * Season Three of Adventure Time premiered.

26

 * The Season one finale of Scooby-Doo! Mystery Incoporated aired in July 26, 2011.

29

 * ThunderCats (2011) aired its 1 hour premiere event on July 29, 2011.

1

 * Season Two of Regular Show ended.

12

 * Season Four of Johnny Test ended.

19

 * Season 3 of Regular Show premiered.
 * Secret Mountain Fort Awesome was pushed from the next month's 3rd day to the 26th this month.

26

 * Courage the Cowardly Dog returns after three months removed from Cartoon Network's schedule.

29

 * The Problem Solverz ends its first season, as Cartoon Network stopped airing the show as it was universally panned for its quality. Later episodes (that of season 2) were released on Netflix in 2013.

1

 * Halloween themed bumpers from last year return for the holiday.
 * Cartoon Network Asia and Australia premieres The Amazing World of Gumball and relaunches the new look, replacing New Wave Era.

1

 * Halloween bumpers end.

21

 * Tom and Jerry Tales made its network premiere.

23

 * Level Up air as a pilot movie and it was greenlight as TV series.

25

 * Christmas themed bumpers from last year begin airing.
 * Ben 10 from Ultimate Alien joins forces with Generator Rex in a crossover special called Ben 10-Generator Rex Heroes United.

2

 * Lego Ninjago: Masters of Spinjitzu aired as a series premiere.