Garfield St Aubrun Sobers was born on 28 July 1936 to Shamont and Thelma Sobers of Walcott Avenue, Bay Land, St Michael, Bridgetown, Barbados, and was the fifth of six children. At birth he had two extra fingers, one on each hand, which he removed himself during childhood, "with the aid of catgut and a sharp knife." Sobers was only five when his father died at sea in January 1942, after his ship was torpedoed by a German U-boat.

From an early age, Sobers demonstrated the talent and ability to play with great skill almost any sport involving a ball, particularly cricket, football and basketball. He and his similarly talented brother Gerald helped their Bay Street Boys' School team to win the primary school Inter-School Cricket championship for three consecutive years. When he was 13, he was recruited to play for two cricket teams. These were the Kent St Philip club in the Barbados Cricket League (BCL) and the Wanderers club, located at Bay Land, in the Barbados Cricket Association (BCA). Garnet Ashby, captain of Kent St Philip, told him that this was his opportunity to play cricket with "the big boys".

Sobers gained useful experience by bowling to Wanderers batsmen, including West Indies Test player Denis Atkinson, at practice in the nets and soon developed his great skill as a left arm spin bowler. More importantly for his career, he was observed by Inspector Wilfred Farmer, captain of the Police team in the BCL First Division. Farmer offered Sobers a chance to play for Police in the 1951–52 season while he was still only 15. In the 1952–53 season, Sobers was invited to the Barbados trials for the colony's tour match against the Indian touring team at Kensington Oval, Bridgetown. He was initially selected as 12th man but then made the team itself when Frank King was forced to withdraw. He therefore made his first-class debut on 31 January 1953, aged only 16. Ba