The Super Bowl XLIX halftime show took place on February 1, 2015, at the University of Phoenix Stadium in Glendale, Arizona as part of Super Bowl XLIX. It featured American singer Katy Perry, with singers Lenny Kravitz and Missy Elliott as special guests. The show was streamed on YouTube. The halftime show attracted 118.5 million viewers, the largest audience in the history of the Super Bowl. It also won two Emmy Awards in September 2015.

In August 2014, it was reported that the NFL had a shortlist of three potential acts for the Super Bowl XLIX halftime show, which were Coldplay, Katy Perry, and Rihanna. However, The Wall Street Journal also reported that league representatives asked representatives of potential acts if they would be willing to provide financial compensation to the NFL in exchange for their appearance, in the form of either an up-front fee, or a cut of revenue from concert performances made following the Super Bowl. While these reports were denied by an NFL spokeswoman, the request had, according to the Journal, received a "chilly" response from those involved.

Fans of "Weird Al" Yankovic launched an unsuccessful campaign to have Yankovic perform the halftime show to promote his album Mandatory Fun. On October 9, 2014, Billboard announced that Katy Perry would perform at halftime, and the NFL confirmed the announcement on November 23, 2014.

On January 10, 2015, Perry announced that Lenny Kravitz would also appear at the halftime show. On January 30, 2015, it was revealed that Missy Elliott, who previously worked with Perry on "Last Friday Night (T.G.I.F.)" (Remix), would be an additional performer. Previously, when teasing her female guest performer, Perry revealed: "I wanted to bring someone back, a throwback of sorts", which would create a "female fun night, a bit of old-school". In preparation for her performance, she watched videos of previous halftime show performers, such as Beyoncé, Madonna, and Michael Jackson. Having spent months working on the show, Perry wanted it to be "a whole different show" from her Prismatic World Tour, which she was still embarking on. She also met with previous halftime performer Bruno Mars to seek advice on how to prepare for the performance.

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