Back to the Egg is the seventh and final (until 2024's One Hand Clapping) studio album by the British–American rock band Wings, released in June 1979 on Parlophone in the UK and Columbia Records in North America (their first for the label). Co-produced by Chris Thomas, the album reflects band leader Paul McCartney's embracing of contemporary musical trends such as new wave and punk, and marked the arrival of new Wings members Laurence Juber and Steve Holley. Back to the Egg adopts a loose conceptual theme around the idea of a working band, and its creation coincided with a period of considerable activity for the group, which included making a return to touring and work on several television and film projects.

Recording for the album began in June 1978 and lasted for almost a year. The sessions took place at Spirit of Ranachan Studios in Campbeltown, Scotland; Lympne Castle in Kent, London's Abbey Road Studios, and Replica Studio – the last of which McCartney built as an exact replica of Abbey Road's Studio Two when the latter became unavailable. Wings returned to Abbey Road in March 1979 to complete the album, before filming a series of promotional videos in Lympne and elsewhere, for what became the Back to the Egg TV special.

Back to the Egg received unfavourable reviews from the majority of critics, with Rolling Stone magazine deriding it as "the sorriest grab bag of dreck in recent memory". Although the album charted in the top ten around the world and was certified platinum in the United States, it was viewed as a commercial failure relative to previous Wings releases, particularly in light of the generous financial terms under which McCartney had signed with CBS-owned Columbia Records. Of its singles – "Old Siam, Sir", "Getting Closer" and "Arrow Through Me" – only "Getting Closer" made the top 20 in Britain or America. The song "Rockestra Theme", recorded with a cast of guest musicians from bands such as the Who, Led Zeppelin and Pink Floyd, won a Grammy Award for Best Rock Instrumental Performance in 1980.

Wings toured the UK in support of the album, but the planned world tour ended in January 1980, when McCartney was arrested in Japan for possession of marijuana, spending nine days in jail. The group disbanded early the following year after the departure of Laine. Back to the Egg was reissued in 1993, with bonus tracks, and in 2007 for iTunes, with the addition of Wings' 1979 non-album single "Goodnight Tonight", in its extended form.