Viktor Troicki, Serbian tennis player
Viktor Troicki (Serbian Cyrillic: Виктор Троицки, pronounced [ʋîktor troǐtskiː]; born 10 February 1986) is a Serbian former professional tennis player. He won his first ATP singles title at the 2010 Kremlin Cup, and his second and third ATP singles titles at the 2015 and 2016 Apia International Sydney. His biggest achievements were a career-high singles ranking of world No. 12 (achieved in June 2011) and winning the deciding rubber in Serbia's Davis Cup final against France in 2010. Since then, in every Davis Cup he attended, he contributed to Serbia reaching a quarterfinal or better. He is known for serving a 12-month ban for anti-doping rule violation in 2013–14 for missing a blood test.By winning the inaugural ATP Cup in 2020, Troicki became the first player in tennis Open Era history to win all three major team competitions (Davis Cup in 2010 and World Team Cup in 2009 and 2012).

In December 2020, Troicki was appointed as captain of the Serbian team for the Davis Cup and ATP Cup.