Barry Gibb was born on September 1, 1946 to Barbara and Hugh Gibb in the Isle of Man. He has an older sister, Lesley (born 1945), and had three younger brothers, fraternal twins Robin (1949–2012) and Maurice (1949–2003), and Andy (1958–1988).

He and his family moved to Chorlton-cum-Hardy in Manchester in 1953. When he was 12 years old, his family moved to Brisbane, Australia, settling in one of the city's poorest suburbs, Cribb Island. The suburb was later bulldozed to make way for Brisbane Airport.

Barry Gibb's Family Tree