Abstract: An auxiliary stirrup assembly is provided to permit small children to ride on a standard saddle which otherwise is too large for them. The stirrup assembly includes a strap which is attached to the pommel of the saddle and extends along each side of the seat to circle behind the cantle of the saddle, leaving the seat free of any encumbrances. Auxiliary stirrups are attached by means of adjustable length stirrup straps to each side of the seat-encircling strap to complete the stirrup assembly. The child rides using the stirrups of the auxiliary stirrup assembly which hang down alongside the fenders of the standard full-sized saddle on which the auxiliary stirrup assembly is mounted.