Viktor Nagy is a Hungarian water polo goalkeeper. He took up the sport at the age of 10 at the Szolnoki Dózsa in Budapest, and made his first appearance for the Hungarian national team in 2006. He won the world title in 2013 and competed at the 2012, 2016 and 2020 Summer Olympics

The men's tournament of Water polo at the 2016 Summer Olympics at Rio de Janeiro, Brazil, began on 6 August and ended on 20 August 2016. Games were held at the Maria Lenk Aquatics Centre and the Olympic Aquatics Stadium.