Serhiy Viktorovych Kokurin (Russian: Сергей Викторович Кокурин, Ukrainian: Сергій Вікторович Кокурін; 1 January 1978 – 18 March 2014) was a Ukrainian soldier who was shot dead by a sniper during the assault on the Ukrainian military base in Simferopol. He was the first soldier killed during the Annexation of Crimea by the Russian Federation.