| Koskov Aleksandr Leonidovich b. 23.09.1964 · Registered · LDPR | Regional assembly, Perm Krai, 2006 03.12.2006 · Perm Krai |
| Koskov Oleg Alekseevich b. 1972 · Registered · The Greens | Regional assembly, Ryazan Oblast, 2025 14.09.2025 · Ryazan Oblast |
| Kosnyrev Valeriy Nikolaevich b. 1977 · Registered · LDPR | Regional assembly, Komi Republic, 2025 14.09.2025 · Komi Republic |
| Kosov Vladimir Nikolaevich b. 24.12.1948 · Registered · CPRF | Regional assembly, Tambov Oblast, 2001 16.12.2001 · Tambov Oblast |
| Kosov Ivan Sergeevich b. 2003 · Registered · The Greens | Regional assembly, Saint Petersburg, 2026 20.09.2026 · Saint Petersburg |
| Kosov Igor Viktorovich b. 1957 · Registered · CPRF | Regional assembly, Republic of Adygea, 2026 20.09.2026 · Republic of Adygea |
| Kosov Igor Viktorovich b. 1957 · Registered · CPRF | Regional assembly, Republic of Adygea, 2026 20.09.2026 · Republic of Adygea |
| Kosolapov Dmitriy Dmitrievich b. 07.07.1961 · Registered · A Just Russia | Regional assembly, Murmansk Oblast, 2007 11.03.2007 · Murmansk Oblast |
| Kostarev Evgeniy Nikolaevich b. 1979 · Registered · New People | Regional assembly, Komi Republic, 2025 14.09.2025 · Komi Republic |
| Kostarev Nikolay Aleksandrovich b. 24.09.1953 · Registered · Yabloko | Regional assembly, Tomsk Oblast, 2007 11.03.2007 · Tomsk Oblast |
| Kostarev Nikolay Aleksandrovich b. 24.09.1953 · Registered · Yabloko | Regional assembly, Tomsk Oblast, 2007 11.03.2007 · Tomsk Oblast |
| Kostenko Aleksandr Ivanovich b. 17.02.1981 · Registered · LDPR | Regional assembly, Sakhalin Oblast, 2004 10.10.2004 · Sakhalin Oblast |
| Kostenko Anton Igorevich b. 1979 · Registered · CPRF | Regional assembly, Chelyabinsk Oblast, 2025 14.09.2025 · Chelyabinsk Oblast |
| Kostenko Anton Igorevich b. 1979 · Registered · CPRF | Regional assembly, Chelyabinsk Oblast, 2025 14.09.2025 · Chelyabinsk Oblast |
| Kostenko Viktoriya Vladimirovna b. 1991 · Registered · Party of Pensioners | Regional assembly, Kaluga Oblast, 2025 14.09.2025 · Kaluga Oblast |
| Kostenko Natalya Ivanovna b. 05.10.1972 · Registered · CPRF | Repeat · Regional assembly, Kurgan Oblast, 2007 11.03.2007 · Kurgan Oblast |
| Kostetskaya Ilona Igorevna b. 1987 · Registered · New People | Regional assembly, Omsk Oblast, 2026 20.09.2026 · Omsk Oblast |
| Kostikina Elena Vladimirovna b. 1979 · Registered · LDPR | Regional assembly, Ryazan Oblast, 2025 14.09.2025 · Ryazan Oblast |
| Kostikina Elena Vladimirovna b. 1979 · Registered · LDPR | Regional assembly, Ryazan Oblast, 2025 14.09.2025 · Ryazan Oblast |
| Kostikova Elena Georgievna b. 1983 · Registered · LDPR | Regional assembly, Republic of Adygea, 2026 20.09.2026 · Republic of Adygea |
| Kostin Valeriy Ivanovich b. 08.12.1950 · Registered · Rodina | Regional assembly, Kaliningrad Oblast, 2006 12.03.2006 · Kaliningrad Oblast |
| Kostin Vitaliy Pavlovich b. 27.10.1947 · Registered · United Russia | Regional assembly, Novgorod Oblast, 2006 08.10.2006 · Novgorod Oblast |
| Kostin Konstantin Olegovich b. 1990 · Registered · New People | Regional assembly, Pskov Oblast, 2026 20.09.2026 · Pskov Oblast |
| Kostin Mikhail Ivanovich b. 29.11.1953 · Registered · LDPR | Regional assembly, Pskov Oblast, 2007 11.03.2007 · Pskov Oblast |
| Kostina Marina Vasilevna b. 08.01.1969 · Registered · CPRF | Regional assembly, Kaluga Oblast, 2004 14.11.2004 · Kaluga Oblast |
| Kostina Marina Vasilevna b. 1969 · Registered · CPRF | Regional assembly, Kaluga Oblast, 2025 14.09.2025 · Kaluga Oblast |
| Kostina Marina Vasilevna b. 1969 · Registered · CPRF | Regional assembly, Kaluga Oblast, 2025 14.09.2025 · Kaluga Oblast |
| Kostina Olga Alekseevna b. 05.09.1949 · Registered · Party of Pensioners | Regional assembly, Kurgan Oblast, 2004 28.11.2004 · Kurgan Oblast |
| Kostina Olga Viktorovna b. 19.09.1962 · Registered · LDPR | Regional assembly, Kaliningrad Oblast, 2006 12.03.2006 · Kaliningrad Oblast |
| Kostina Olga Viktorovna b. 19.09.1962 · Registered · LDPR | Regional assembly, Kaliningrad Oblast, 2006 12.03.2006 · Kaliningrad Oblast |
| Kostogryz Igor Viktorovich b. 1965 · Registered · CPRF | Regional assembly, Khanty-Mansi Autonomous Okrug – Yugra, 2026 20.09.2026 · Khanty-Mansi Autonomous Okrug |
| Kostoev Aliskhan Akhmetovich b. 1995 · Registered · LDPR | Regional assembly, Republic of Ingushetia, 2026 20.09.2026 · Republic of Ingushetia |
| Kostoev Aslan Khusenovich b. 1990 · Registered · United Russia | Regional assembly, Republic of Ingushetia, 2026 20.09.2026 · Republic of Ingushetia |
| Kostoev Umar Batyrovich b. 1984 · Registered · LDPR | Regional assembly, Republic of Ingushetia, 2026 20.09.2026 · Republic of Ingushetia |
| Kostoeva Zarema Khusenovna b. 1973 · Registered · New People | Regional assembly, Republic of Ingushetia, 2026 20.09.2026 · Republic of Ingushetia |
| Kostoeva Madina Khusenovna b. 1982 · Registered · New People | Regional assembly, Republic of Ingushetia, 2026 20.09.2026 · Republic of Ingushetia |
| Kostoeva Fatima Khasanovna b. 1987 · Registered · LDPR | Regional assembly, Republic of Ingushetia, 2026 20.09.2026 · Republic of Ingushetia |
| Kostoeva Khava Suleymanovna b. 2000 · Registered · LDPR | Regional assembly, Republic of Ingushetia, 2026 20.09.2026 · Republic of Ingushetia |
| Kostokova Regina Ruslanovna b. 24.09.1983 · Registered · CPRF | Regional assembly, Republic of Adygea, 2006 12.03.2006 · Republic of Adygea |
| 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 |
| 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, 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, 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 |
| Kostrova Tatyana Viktorovna b. 1990 · Registered · New People | Regional assembly, Kurgan Oblast, 2025 14.09.2025 · Kurgan Oblast |
| 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 |
