Bonnie Leigh McKee (born January 20, 1984) is an American singer, songwriter, and actress. Her debut album, Trouble, was released in 2004. McKee released the lead single, "American Girl", from her currently untitled second studio album in July 2013. Her second studio album is scheduled for release in 2014 or 2015.

McKee has co-written eight singles that have reached #1 in the United States or the United Kingdom, which have sold more than 30 million copies worldwide combined. She has also co-written over 50 songs that have been recorded by other artists. McKee is particularly known for collaborating with pop singer Katy Perry, and the duo have co-written the hits "California Gurls," "Teenage Dream," "Last Friday Night (T.G.I.F.)," "Part of Me," "Wide Awake," and "Roar" together. McKee also co-wrote "Dynamite" by Taio Cruz, which became the second best-selling song by a British artist in the digital era. Throughout her career as a songwriter, McKee has also written for Britney Spears, Miranda Cosgrove, Christina Aguilera, Lea Michele, Kesha, Avril Lavigne, Kelly Clarkson, Carly Rae Jepsen, Leona Lewis, and Adam Lambert among others.