Barry Alan Crompton GibbCBE (born 1 September 1946) is a musician, singer and songwriter and producer, who rose to worldwide fame as a founding member of the Bee Gees. He is also the eldest and last surviving Gibb brother.

With his younger brothers, twins Robin and Maurice, he formed the Bee Gees, one of the most successful pop groups in the history of music. Their younger brother Andy was also a popular singer. The trio got their start in Australia and found major success when they returned to England.

Known for his high-pitched falsetto singing voice, Gibb shares the record with John Lennon and Paul McCartney for consecutive Billboard Hot 100 Number Ones as a writer with six. The book of Guinness World Records lists Barry Gibb as the second most successful songwriter in history behind Paul McCartney.