| Kostomarov Aleksandr Mikhaylovich b. 31.08.1939 · Registered · Arkhangelskoe oblastnoe otdelenie "Kommunisticheskoy partii Rossiyskoy Federatsii" | Regional assembly, Arkhangelsk Oblast, 2009 01.03.2009 · Arkhangelsk Oblast |
| Kostomarov Vladimir Borisovich b. 26.01.1954 · Registered · Voters’ group | Regional assembly, Kaliningrad Oblast, 2006 12.03.2006 · Kaliningrad Oblast |
| Kostrikin Aleksandr Borisovich b. 01.11.1955 · Registered · LDPR | Regional assembly, Murmansk Oblast, 2007 11.03.2007 · Murmansk Oblast |
| Kostrikov Aleksandr Aleksandrovich b. 31.12.1980 · Registered · A Just Russia | Regional assembly, Oryol Oblast, 2007 11.03.2007 · Oryol Oblast |
| Kostrikov Mikhail Sergeevich b. 05.08.1980 · Registered · CPRF | Regional assembly, Republic of Bashkortostan, 2008 02.03.2008 · Republic of Bashkortostan |
| Kostrin Valentin Ivanovich b. 24.02.1945 · Registered · CPRF | State Duma, 2011 04.12.2011 · Russian Federation |
| Kostrin Valentin Ivanovich b. 24.02.1945 · Registered · CPRF | State Duma, 2007 02.12.2007 · Russian Federation |
| Kostrin Valentin Ivanovich b. 24.02.1945 · Registered · CPRF | Regional assembly, Republic of Tatarstan, 2004 14.03.2004 · Republic of Tatarstan |
| Kostrin Valentin Ivanovich b. 24.02.1945 · Registered · CPRF | Regional assembly, Republic of Tatarstan, 2009 01.03.2009 · Republic of Tatarstan |
| Kostrin Valentin Ivanovich b. 24.02.1945 · Registered · CPRF | Regional assembly, Republic of Tatarstan, 2004 14.03.2004 · Republic of Tatarstan |
| Kostritsa Vasiliy Maksimovich b. 18.05.1964 · Registered · A Just Russia | Regional assembly, Leningrad Oblast, 2007 11.03.2007 · Leningrad Oblast |
| Kostritskiy Anatoliy Vladimirovich b. 28.08.1955 · Registered · United Russia | Regional assembly, Stavropol Krai, 2007 11.03.2007 · Stavropol Krai |
| Kostrov Aleksandr Nikolaevich b. 11.10.1962 · Registered · United Russia | Regional assembly, Ryazan Oblast, 2010 14.03.2010 · Ryazan Oblast |
| Kostrov Aleksandr Nikolaevich b. 11.10.1962 · Registered · United Russia | Regional assembly, Ryazan Oblast, 2005 20.03.2005 · Ryazan Oblast |
| Kostrov Vladimir Vasilevich b. 19.02.1936 · Registered · CPRF | Regional assembly, Ivanovo Oblast, 2005 04.12.2005 · Ivanovo Oblast |
| Kostrov Denis Nikolaevich b. 01.04.1985 · Registered · Politicheskaya partiya «Demokraticheskaya partiya Rossii» | State Duma, 2007 02.12.2007 · Russian Federation |
| Kostrov Evgeniy Viktorovich b. 24.04.1963 · Registered · A Just Russia | State Duma, 2021 19.09.2021 · Russian Federation |
| Kostrov Mikhail Nikolaevich b. 03.05.1966 · Registered · A Just Russia | Regional assembly, Nizhny Novgorod Oblast, 2011 13.03.2011 · Nizhny Novgorod Oblast |
| Kostrov Renat Alekseevich b. 02.08.1942 · Registered · Politicheskaya partiya «Partiya sotsialnoy spravedlivosti» | State Duma, 2007 02.12.2007 · Russian Federation |
| Kostrova Elena Evgenevna b. 22.09.1988 · Registered · Vserossiyskaya politicheskaya partiya "Partiya Sotsialnykh Setey" | Regional assembly, Republic of North Ossetia–Alania, 2012 14.10.2012 · Republic of North Ossetia–Alania |
| Kostrova Elena Evgenevna b. 22.09.1988 · Registered · "Vserossiyskaya politicheskaya partiya "Partiya Sotsialnykh Setey" | Regional assembly, Saratov Oblast, 2012 14.10.2012 · Saratov Oblast |
| Kostrova Elena Evgenevna b. 22.09.1988 · Registered · RO v Krasnodarskom krae VPP "Partiya Sotsialnykh Setey" | Regional assembly, Krasnodar Krai, 2012 14.10.2012 · Krasnodar Krai |
| Kostrova Tatyana Viktorovna b. 1990 · Registered · New People | Regional assembly, Kurgan Oblast, 2025 14.09.2025 · Kurgan Oblast |
| Kostromin Aleksey Viktorovich b. 27.06.1979 · Registered · Self-nomination | Regional assembly, Novosibirsk Oblast, 2005 11.12.2005 · Novosibirsk Oblast |
| Kostromin Valeriy Anatolevich b. 01.07.1964 · Registered · Self-nomination | Regional assembly, Novosibirsk Oblast, 2001 02.12.2001 · Novosibirsk Oblast |
| Kostromin Evgeniy Filippovich b. 01.03.1953 · Registered · CPRF | Regional assembly, Magadan Oblast, 2010 10.10.2010 · Magadan Oblast |
| Kostromin Sergey Vladimirovich b. 18.04.1963 · Registered · Self-nomination | Regional assembly, Chelyabinsk Oblast, 2015 13.09.2015 · Chelyabinsk Oblast |
| Kostromin Sergey Vladimirovich b. 18.04.1963 · Registered · Self-nomination | Regional assembly, Chelyabinsk Oblast, 2000 24.12.2000 · Chelyabinsk Oblast |
| Kostromin Sergey Vladimirovich b. 18.04.1963 · Registered · Samovydvizhenie | By-election · Regional assembly, Chelyabinsk Oblast, 2008 12.10.2008 · Chelyabinsk Oblast |
| Kostromin Sergey Vladimirovich b. 18.04.1963 · Registered · Voters’ group | State Duma, 2003 07.12.2003 · Russian Federation |
| Kostromin Sergey Vladimirovich b. 18.04.1963 · Registered · Voters’ group | State Duma, 2003 07.12.2003 · Russian Federation |
| Kostromina Irina Aleksandrovna b. 25.10.1987 · Registered · Patriots of Russia | Regional assembly, Krasnodar Krai, 2012 14.10.2012 · Krasnodar Krai |
| Kostromitin Evgeniy Vasilevich b. 21.01.1961 · Registered · Patriots of Russia | State Duma, 2011 04.12.2011 · Russian Federation |
| Kostromitinova Elvira Valerevna b. 27.06.1980 · Registered · Patriots of Russia | Regional assembly, Kursk Oblast, 2006 12.03.2006 · Kursk Oblast |
| Kostrykin Aleksey Mikhaylovich b. 08.08.1946 · Registered · Patriots of Russia | Regional assembly, Murmansk Oblast, 2007 11.03.2007 · Murmansk Oblast |
| Kostrykin Aleksey Mikhaylovich b. 08.08.1946 · Registered · Patriots of Russia | State Duma, 2007 02.12.2007 · Russian Federation |
| Kostrykin Vitaliy Valerevich b. 10.02.1979 · Registered · LDPR | Regional assembly, Republic of Adygea, 2011 13.03.2011 · Republic of Adygea |
| Kostrykin Georgiy Mikhaylovich b. 18.06.1947 · Registered · A Just Russia | Regional assembly, Krasnoyarsk Krai, 2007 15.04.2007 · Krasnoyarsk Krai |
| Kostrykin Georgiy Mikhaylovich b. 18.06.1947 · Registered · A Just Russia | Regional assembly, Krasnoyarsk Krai, 2011 04.12.2011 · Krasnoyarsk Krai |
| Kostryukov Viktor Ivanovich b. 04.08.1953 · Registered · United Russia | Regional assembly, Novgorod Oblast, 2006 08.10.2006 · Novgorod Oblast |
| Kostryukov Sergey Pavlovich b. 31.01.1965 · Registered · United Russia | Regional assembly, Vladimir Oblast, 2009 01.03.2009 · Vladimir Oblast |
| Kostygova Tatyana Vasilevna b. 06.03.1955 · Registered · Voters’ group | Regional assembly, Vologda Oblast, 2007 11.03.2007 · Vologda Oblast |
| Kostylev Anatoliy Stepanovich b. 10.01.1946 · Registered · A Just Russia | Regional assembly, Altai Krai, 2011 04.12.2011 · Altai Krai |
| Kostylev Vladislav Leonidovich b. 17.03.1974 · Registered · A Just Russia | Regional assembly, Sakhalin Oblast, 2012 14.10.2012 · Sakhalin Oblast |
| Kostylev Vyacheslav Alekseevich b. 2002 · Registered · Rodina | Regional assembly, Voronezh Oblast, 2025 14.09.2025 · Voronezh Oblast |
| Kostylev Vyacheslav Alekseevich b. 2002 · Registered · Rodina | Regional assembly, Voronezh Oblast, 2025 14.09.2025 · Voronezh Oblast |
| Kostylev Dmitriy Valerevich b. 15.05.1985 · Registered · LDPR | Early · Regional assembly, Sverdlovsk Oblast, 2011 04.12.2011 · Sverdlovsk Oblast |
| Kostylev Lev Nikolaevich b. 23.08.1951 · Registered · Patriots of Russia | Regional assembly, Krasnodar Krai, 2012 14.10.2012 · Krasnodar Krai |
| Kostylev Lev Nikolaevich b. 23.08.1951 · Registered · Patriots of Russia | Regional assembly, Krasnodar Krai, 2012 14.10.2012 · Krasnodar Krai |
| Kostylev Lev Nikolaevich b. 23.08.1951 · Registered · Rodina | State Duma, 2003 07.12.2003 · Russian Federation |
