"Yummy" is a song recorded by American singer and songwriter Gwen Stefani, featuring American musician Pharrell Williams, from her second solo studio album, The Sweet Escape (2006). The track was released on November 11, 2006 as a promotional single for the parent album's release through Interscope Records. It was developed during several sessions in Miami, Florida and Hollywood, California in July 2005, for an intended EP or as extra tracks on her video album Harajuku Lovers Live (2005). The song was written by Stefani and Williams and produced by The Neptunes. Musically, the collaboration is a dance-pop recording with a "day-glo" rap. Its lyrics deal with food, sexual intercourse, and the roles that an individual may have within a household.

"Yummy" divided music critics, with some praising its minimalistic production, leaving others to find it too simple, in addition to criticizing its lyrics. It was often compared to Kelis' 2003 hit single "Milkshake". The track was performed during Stefani's The Sweet Escape Tour in 2006, where she entered the stage alongside two keyboard musicians. More recently, the singer sang a rendition of it as part of a melody, known as the "Harajuku Medley", during her MasterCard Priceless Surprises promotional events in 2015 and 2016.

After the release of Love. Angel. Music. Baby. in 2004, Stefani originally intended to return to No Doubt and start recording tracks for their upcoming and untitled sixth studio album, which would later become Push and Shove (2012). Instead, Pharrell Williams convinced her to record several more songs in Miami, Florida and Hollywood, California in July 2005, for a possible extended play (EP) or as bonus tracks on her live album Harajuku Lovers Live. "Wind It Up" and "Orange County Girl" were re-recorded after being originally featured during Stefani's 2004 Harajuku Lovers Tour, while tracks "U Started It", "Breakin' Up", "Candyland", and "Yummy" were developed for the singer's second album. On November 11, 2006, "Yummy" was released as the record's promotional single in a CD single and 12-inch format, with both containing the instrumental, an acapella version, and either the radio edit or album version.

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