The Société Internationale d'Urologie (SIU) is an international professional organization serving the global urological community. Founded in Paris in 1907 by Dr. Jean Casimir Félix Guyon, the SIU now serves its members from its Central Office in Montréal, Canada. Among existing urological societies, the SIU is unique in its international scope and its desire to effect positive and sustainable change in nations across the world. The society’s mission is to enable urologists in all nations, through international cooperation in education and research, to apply the highest standards of urological care to their patients. The SIU strives to position itself as a major international platform for sustainable urological education and collaborative humanitarian activities aimed at improving urological care.