The United States Equestrian Team Foundation (USET Foundation) is the philanthropic partner of US Equestrian, supporting American athletes and horses pursuing international competitive excellence. Its mission is to provide resources for the competition, training, coaching, travel, and education needs of elite and developing high-performance teams. Working with the United States Equestrian Federation, the Foundation supports programs across seven international disciplines: dressage, eventing, jumping, driving, endurance, para dressage, and vaulting.

These programs prepare athletes and horses for the Olympic Games, World Championships, Pan American Games, and other major international competitions, with success measured by strong performances and medals. The Foundation raises its funding through tax-deductible contributions and receives no direct or indirect government subsidy. Its support includes direct athlete grants and named awards, such as the Connaught Grant and Amanda Pirie Warrington Grant.

Based at historic Hamilton Farm in Gladstone, New Jersey, the Foundation also supports equestrian and community events at the facility. Its website shares team news, competition results, grant information, historical resources, and ways to donate