Rachel Dene Serena Hood (born September 1953) is an English barrister, American attorney, classic-winning thoroughbred racehorse owner, local politician, and community activist. She is best known as the owner of Jack Hobbs, winner of the Irish Derby and Dubai Sheema Classic and for her chairwomanship of the Racehorse Owners' Association (ROA).

Educated at Millfield School and Clare College, Cambridge — where she was among the first cohort of women admitted — Hood read law and subsequently practised as a barrister in England before qualifying as an attorney in California, where she lived while her husband began training racehorses. Following the couple's move to Clarehaven Stables in Newmarket in 2006, she founded the campaign group Save Historic Newmarket, which became a significant force in both local government and national planning law, most notably in its decade-long fight against the Hatchfield Farm development. She was elected to Newmarket Town Council in 2011 and has served on West Suffolk Council and Suffolk County Council in various roles since.

Hood attended Millfield School in Street, Somerset on an academic scholarship and read law at Clare College, Cambridge, after being encouraged to apply by her history teacher. She was among the first cohort of female students to study at the college, Clare had admitted its first female undergraduates only in October 1972, making it one of the first three formerly all-male Cambridge colleges to become co-educational, alongside Churchill and King's. Hood won a blue for fencing and whilst coxing for her college, Clare, she met her husband John Gosden who was rowing for Emmanuel.

After graduating from Cambridge, Hood trained as a barrister in England and was called to the Bar. She subsequently practised at the English Bar, where she became the youngest woman to appear in a case at the European Court of Human Rights. She then moved to California with her husband John Gosden, who had started training three horses at Santa Anita Park in Los Angeles.

In the United States she qualified separately as an attorney in the State of California, a jurisdiction with its own Bar examination and admission requirements. Hood described her California legal career with evident affection, characterising the couple's California decade as "joyous, carefree days". She has stated candidly: "Truthfully, I didn't want to come back. I was very happy being a lawyer living up in the Hollywood hills, but it was different for John. For him, training good horses is what it's all about."

Hood joined the board of the Racehorse Owners' Association (ROA) and was elected its President in 2011. As President she secured a seat on the Horsemen's Group, the body representing all participants on the supply side of British racing — owners, trainers, jockeys and stable staff — in negotiations with racecourses and bookmakers.

Her presidency was defined by a sustained campaign for what she termed a racing right — new primary legislation to replace the existing betting levy, by which bookmakers contributed a percentage of their British racing turnover to fund the sport. Hood argued that the existing mechanism was inadequate and that offshore betting was creating an accelerating "black hole" in racing's finances.

Hood's American experience directly shaped her later thinking on British racing's governance. As she explained when ROA President,"The Horsemen's Group was borne out of what John and I experienced in America. In the US, racetracks can't race until they have agreements with horsemen on prize money and the racing programme." This transatlantic perspective lent her subsequent reform efforts a comparative authority that many in British racing found compelling. The government announced in May 2016 that it would introduce the racing right.