Jupiter Island (horse)

Jupiter Island
Racing silks of S M Threadwell & Marquess of Tavistock
Sire	St. Paddy
Grandsire	Aureole
Dam	Mrs Moss
Damsire	Reform
Sex	Stallion
Foaled	23 February 1979[1]
Country	United Kingdom
Colour	Bay
Breeder	Marquess of Tavistock
Owner	S. M. Threadwell Marquess of Tavistock
Trainer	Clive Brittain
Record	41: 14-4-6
Major wins
Ebor Handicap (1983) St. Simon Stakes (1983, 1986) John Porter Stakes (1985) Hardwicke Stakes (1985) Prix du Conseil de Paris (1985) Japan Cup (1986)
Awards
Timeform rating: 74 (1981), 94 (1982), 119 (1983), 116 (1984), 126 (1985), 121 (1986)

Jupiter Island (23 February 1979 – 25 July 1998) was a British Thoroughbred racehorse and sire. He won fourteen of his forty-one races in a six-year racing career which lasted from 1981 until 1986. He showed useful but unexceptional form until the late summer of 1983 when he won the Ebor Handicap and followed up with a win in the St. Simon Stakes. He reached his peak as a six-year-old in 1985 when he won the John Porter Stakes, Hardwicke Stakes and Prix du Conseil de Paris. His final season was disrupted by injury problems, but he ended his career with his biggest success when he became the first British-trained horse to win the Japan Cup.