Tsiolkovsky (1857–1935), Russian and Soviet rocket scientist and pioneer of the astronautic theory Konstantín Alexeyevich Vasilyev (1942–1976), Russian illustrator Konstantin Vassiljev (born 1984), Estonian football player Konstantin Wecker (born 1947), German singer-songwriter Surname Knyaz Konstantin (disambiguation) Leopoldine Konstantin (1886–1965), Austrian actress Stefan Konstantin (1282–1322), King of the Serbian Kingdom Fictional characters Konstantin Levin, fictional character in Leo Tolstoy's Anna Karenina Konstantin, fictional character in Codename Villanelle (2018 novel) and Killing Eve (2018—2022 television show) See also Konstantine Constantin Konstantinov Konstantinovsk Konstantinovsky (disambiguation) Konstantinovka (disambiguation) References Bulgarian masculine given names Russian masculine given names es:Constantino gl:Constantino it:Constantine sr:Константин (вишезначна одредница) fi:Konstantinus vo:Constantine