Zoltán Sió is a Hungarian swimming coach who served as the Event Manager of the 2017 FINA World Championships in Budapest, Hungary. He was previously the head coach fo the Junior National Team of the UAE Swimming Federation, head coach of the Budaörsi Swim Club, president and head coach of Budaörsi Gardàk SE in Budaörs, Pest, Hungary, and Gtg kft Head of the Swimming School.