The collared peccary (Pecari tajacu) is an ungulate animal and little is known about its reproductive physiology. In this work, an anatomic description of the urogenital apparatus (ua) was performed. Eight female and five male collar peccaries were anesthetized and perfused with McKormik solution. The ua was dissected out and its structures were further described. The ua of the collared peccary was found to be typical of mammals and it shared many features with the ua of the pig. Thus far,this is the first report to describe structures such as the urogenital sinus, vestibular glands and vulva-associated striated muscle in females. It is also the first description of the male ua of the collared peccary in which several exclusive characteristics were found.Con la finalidad de incrementar la información sobre la fisiología reproductiva del pecarí de collar (Pecari tajacu) se realizó una descripción anatómica del aparato urogenital (au) de esta especie. Se utilizaron ocho hembras y cinco machos que fueron anestesiados y perfundidos con solución de McKormik. Se realizaron disecciones para extraer el au y se describieron sus componentes. El au del pecarí de collar es característico del mamífero pero presenta similitudes con el au del cerdo. Este trabajo es el primer reporte donde se describe un seno urogenital, las glándulas vestibulares y la musculatura estriada asociada a la vulva. Es también, el primer reporte del au masculino del pecarí de collar, encontrándose algunaUAEMex-2556/2007-U