"Wide Awake" is a song by American singer Katy Perry from Teenage Dream: The Complete Confection. She co-wrote the song with Max Martin, Bonnie McKee, and its producers Dr. Luke and Cirkut. It was specifically written for Perry's autobiographical film Katy Perry: Part of Me. Capitol Records released the song onto radio stations on May 22, 2012. The track is a power ballad styled in dance-pop, and features lyrics about the reality of a break up and moving forward.

"Wide Awake" became another commercial success for Perry, topping the charts in Canada and New Zealand while reaching number two in Lebanon, Mexico, and the United States. In America, the song was kept off the top spot by Carly Rae Jepsen's "Call Me Maybe". It also peaked within the top 10 in Australia, Hungary, Ireland, and the United Kingdom as well as the top 20 in Brazil, Italy, and Slovakia. The single's music video was directed by Lance Drake, and featured a fairy tale-like story, starring Perry and a child version of her. The video also makes references from Perry's Teenage Dream singles and the previous Complete Confection single "Part of Me".

Perry co-wrote "Wide Awake" with Bonnie McKee, Max Martin, and its producers Cirkut and Dr. Luke. The production coordination was helmed by Irene Richter and Katie Mitzell. Recorded at Nightbird Recording Studios in West Hollywood, California, it was engineered by Clint Gibbs, who was assisted by Angelo Caputo, and John Hanes, and was mixed by Serban Ghenea.

According to Perry, "Wide Awake" was inspired by "major life changes", including her divorce from actor and comedian Russell Brand. In an interview with MTV News, Perry revealed, "Well, this song, I have a lot of different emotions and feelings in all of my songs. This song in particular is a dose of reality. It's kind of like coming down from a high. You’ve been on cloud nine for so long, and it can't always be so sweet and sometimes you need to realize that, and you have to pick yourself up and move forward and face the facts of life and know that this is just a lesson you learn and you're stronger because of it." McKee opined that the song represented Perry's departure from her previous releases.

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