Yana Oleksandrivna Klochkova (Ukrainian: Яна Олександрівна Клочкова; born 7 August 1982 in Simferopol) is a Ukrainianswimmer, who has won five Olympic medals in her career, with four of them being gold. She is Master of Sports, World Class and the only multi gold medal holder (more than two) in Ukraine.
Her gold medals came in the 200 meter individual medley and the 400 meter individual medley at the 2000 and 2004 Summer Olympics; her silver medal came in the 800 meter freestyle at the 2000 Summer Olympics. She has also won ten titles at swimming's world championships, nineteen European championship titles. She currently holds the short-course world record in the 400 meter individual medley. Her 400 m individual medley world record was broken by American Katie Hoff at the 2007 World Championships in Melbourne. In 2003 she won four golds at the Summer Universiade in South Korea. She was also awarded the Hero of Ukraine medal. In 2004, she was named by Swimming World magazine as the World Female Swimmer of the Year.