Dejan Udovičić (Serbian Cyrillic: Дејан Удовичић; born 27 July 1970) is a Serbian professional water polo head coach. He became head coach in June 2006. after the dissolution of the State Union of Serbia and Montenegro. As a senior, he played water polo for Partizan Belgrade and VK Beograd. As a club coach for Partizan, he worked since 2000–2009. In 2007 Euroleague Final Four in Milan he won the third place. His most notable achievements as a Serbian water polo head coach are gold medals from 2009 Rome World Championship and 2006 Belgrade and 2012 Eindhoven European Championship as also a bronze medal from the Olympic Games in 2008 Beijing.