Robin Hugh Gibb CBE (born 22 December 1949) is a singer and songwriter. He is best known as a member of the singing/songwriting trio the Bee Gees, cofounded with his twin brother Maurice Gibb (1949-2003), and elder brother Barry.

Born in the Isle of Man, to English parents, the trio started their musical career in Australia, and found major success when they returned to England. With record sales estimated in excess of 100 million, the Bee Gees became one of the most successful pop groups of all time. Robin Gibb is the fifth most successful songwriter in UK chart history based on the number of weeks his compositions have spent on the chart.

Born Robin Hugh Gibb to Barbara (née Pass) and Hugh Gibb in the Isle of Man. Robin was the fraternal twin brother of Maurice Gibb, and was the older of the twins by thirty-five minutes. The third-born of five children, he has one older sister, Lesley (b. 1945), and three brothers, Barry (b. 1946), twin Maurice (b. 1949), and Andrew (b. 1958). In late 1958, he and his family, including baby brother Andy, moved to Brisbane, Australia, settling in one of the city's poorest suburbs, Cribb Island, which was subsequently demolished to make way for the Brisbane Airport. Their music careers began in Australia, and flourished when they returned to England in 1967 and were spotted by Robert Stigwood.