Gregory Alan "Greg" Best (born July 23, 1964 in Lynchburg, Virginia) is an equestrian competitor and coach in the sport of show jumping who won two silver medals for the United States in the 1988 Summer Olympic Games in Seoul, South Korea riding the famous Gem Twist. In 1992, Best suffered a fall that shattered his shoulder. After this, he moved to New Zealand, where he rode for the New Zealand League, winning the World Cup Series. He has also served as a New Zealand National Show Jumping Selector, a National Show Jumping Coach and a member of the New Zealand Show Jumping High Performance Committee. Best coached New Zealand's jumpers for the 2004 Summer Olympic Games in Athens. Between 1987 and 2003, Best also garnered 6 FEIWorld Cup wins. He now conducts coaching clinics in the United States, Canada and New Zealand. Along with Gem Twist, horses named Santos and Entrepreneur have been among his champion mounts.