"Sunday Morning" is a song recorded by American rock band No Doubt. It was released as the sixth single from their third studio album Tragic Kingdom (1995). The single was made available as a CD single, cassette single, and VHS single on May 27, 1997 through Interscope. Lyrically, the song is about Gwen Stefani's relationship with Tony Kanal, and their breakup that followed. The track was written by band members Kanal, Gwen Stefani, and Eric Stefani, while production was handled by Matthew Wilder.

The single was well received by many music critics, with one of them calling it a "standout track". It also performed well commercially, peaking in the top 50 in several countries, including the UK, Canada, and Australia; the song was certified gold in the latter country for sales of over 35,000 copies. Musically, "Sunday Morning" is a ska punk and reggae rock song. A music video for the single was released in 1996 and directed by Sophie Muller; it features the band members preparing a large feast before getting into a food fight.

Recording sessions and meetings for No Doubt's third studio album Tragic Kingdom (1995) began in 1993 between members Eric Stefani, Gwen Stefani, Tony Kanal, Tom Dumont, Adrian Young, and musician Gary Angle. The material produced with Angle was hugely rejected by Interscope Records' officials, and had the members work with producer Matthew Wilder instead. Upset with working with someone outside the band, Eric eventually stopped recording with the band, and encouraged the remaining members to write the group's songs, as he felt threatened when he did so. After Kanal broke off his seven-year relationship with Gwen, both of them wrote several more songs, until there was enough material for an album. The single's inspiration came when Kanal was having a fight with Stefani, his then-girlfriend, through the bathroom door of his parents' house in Yorba Linda, California; Stefani later revamped the lyrics to discuss her breakup with Kanal.

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