Abstract: There is provided a platform stirrup for supporting an equestrian rider's foot. The improved stirrup allows the rider to rest his weight on each foot by placing weight on both the heel of the foot and the ball of the foot. The stirrup still allows the rider to make good heel contact with the barrel of the horse. The platform stirrup includes a substantially planar platform defining an inner edge and an outer edge, a front edge and a rear edge, and the platform is shaped so as to accommodate the rider's foot. A forward arch extends from the inner edge of the platform in a substantially right angle; and a rear support extends from the rear edge of the platform in a substantially right angle. A forward strap is affixed to the inner forward arch; and a rear strap is affixed to the rear support or edge of the platform. The forward strap and the rear strap are also affixed to the saddle and the straps are configured so as to position the platform substantially parallel to the ground.