The first name Konstantin (Cyrillic: Константин) is a derivation from the Latin name Constantinus (Constantine) in some European languages, such as Russian and German. As a Christian given name, it refers to the memory of the Roman emperor Constantine the Great. A number of notable persons in the Byzantine Empire, and (via mediation by the Christian Orthodox Church) in Russian history and earlier East Slavic history are often referred to by this name.
Konstantin means firm, constant.
People bearing the name Konstantin include:
- Given name
- Konstantin, a fictional character in Codename Villanelle (2018 novel) and Killing Eve (2018— television show)
- Konstantin of Rostov (1186–1218), Grand Prince of Vladimir
- Konstantin Chernenko (1911–1985), Soviet politician, General Secretary of the Communist Party
- Konstantin Dejanović (>1355–1395), Serbian ruler
- Konstantin Feoktistov (1926–2009), Soviet cosmonaut
- Konstantin Grigorishin (born 1965), Ukrainian billionaire businessman
- Konstanty Kalinowski (1838–1864), 19th-century revolutionary who was one of the leaders of the January Uprising in Congress Poland
- Konstantin Khanin, Russian mathematician
- Konstantin Konik (1873–1936), Estonian politician and surgeon
- Konstantin Korovin (1861–1939), Russian painter
- Konstantin Kravchuk (born 1985), Russian tennis player
- Konstantin Leontiev (1831–1891), Russian philosopher
- Konstantin Märska (1896–1951), Estonian cinematographer
- Konstantin Nahk (born 1975), Estonian football player
- Konstantin von Neurath (1873–1956), German diplomat
- Konstantin Päts (1874–1956), Estonian politician, first President of Estonia
- Konstantin Petrzhak (1907-1998), Soviet physicist
- Konstantin Ramul (1879–1975), Estonian psychologist
- Konstantin Rokossovsky (1896-1968), Marshal of the Soviet Union
- Konstantin Romanov (disambiguation)
- Konstantin Stanislavsky (1863–1938), Russian actor and theater director
- Konstantín Alexeyevich Vasilyev (1942–1976), Russian illustrator
- Konstantin Viktorovich Vasilyev (born 1993), Russian football player
- Konstantin Vassiljev (born 1984), Estonian football player
- Surname