| Kosogov Evgeniy Vladimirovich b. 29.04.1987 · Nominated · A Just Russia | Regional assembly, Oryol Oblast, 2021 19.09.2021 · Oryol Oblast |
| Kosogov Sergey Vladimirovich b. 05.09.1983 · Nominated · CPRF | Regional assembly, Kursk Oblast, 2021 19.09.2021 · Kursk Oblast |
| Kosolapenkov Vladimir Nikolaevich b. 02.09.1977 · Nominated · United Russia | Regional assembly, Chuvash Republic, 2021 19.09.2021 · Chuvash Republic |
| Kosolapov Andrey Vladimirovich b. 21.12.1971 · Nominated · United Russia | Regional assembly, Volgograd Oblast, 2014 14.09.2014 · Volgograd Oblast |
| Kosolapov Vitaliy Gennadevich b. 02.03.1972 · Nominated · CPRF | Regional assembly, Orenburg Oblast, 2016 18.09.2016 · Orenburg Oblast |
| Kosolapov Gennadiy Ivanovich b. 21.11.1955 · Nominated · United Russia | Regional assembly, Chuvash Republic, 2016 18.09.2016 · Chuvash Republic |
| Kosolapov Oleg Vladimirovich b. 28.11.1974 · Nominated · United Russia | Regional assembly, Lipetsk Oblast, 2016 18.09.2016 · Lipetsk Oblast |
| Kosolapov Oleg Yurevich b. 07.06.2003 · Nominated · New People | Regional assembly, Mari El Republic, 2024 08.09.2024 · Mari El Republic |
| Kosolapov Oleg Yurevich b. 07.06.2003 · Nominated · New People | Regional assembly, Mari El Republic, 2024 08.09.2024 · Mari El Republic |
| Kosolapov Oleg Yurevich b. 07.06.2003 · Nominated · New People | Regional assembly, Altai Republic, 2024 08.09.2024 · Altai Republic |
| Kosonogov Dmitriy Aleksandrovich b. 27.03.1987 · Nominated · Communists of Russia | Regional assembly, Volgograd Oblast, 2014 14.09.2014 · Volgograd Oblast |
| Kosonogov Dmitriy Aleksandrovich b. 27.03.1987 · Nominated · Communists of Russia | By-election · Regional assembly, Volgograd Oblast, 2013 08.09.2013 · Volgograd Oblast |
| Kosonogov Dmitriy Gennadevich b. 09.02.1979 · Nominated · Rodina | Regional assembly, Ulyanovsk Oblast, 2013 08.09.2013 · Ulyanovsk Oblast |
| Kosonogova Svetlana Vladimirovna b. 23.08.1982 · Nominated · Rodina | Regional assembly, Ulyanovsk Oblast, 2013 08.09.2013 · Ulyanovsk Oblast |
| Kosorukov Artem Yurevich b. 08.06.1979 · Nominated · Communists of Russia | Regional assembly, Ryazan Oblast, 2015 13.09.2015 · Ryazan Oblast |
| Kosorukov Artur Igorevich b. 08.02.1992 · Nominated · CPRF | Regional assembly, Tula Oblast, 2014 14.09.2014 · Tula Oblast |
| Kosourov Viktor Semenovich b. 01.04.1948 · Nominated · United Russia | Regional assembly, Novosibirsk Oblast, 2015 13.09.2015 · Novosibirsk Oblast |
| Kosoukhov Andrey Petrovich b. 19.08.1960 · Nominated · United Russia | Regional assembly, Altai Krai, 2021 19.09.2021 · Altai Krai |
| Kostaganov Vladimir Aleksandrovich b. 24.01.1956 · Nominated · LDPR | Regional assembly, Bryansk Oblast, 2024 08.09.2024 · Bryansk Oblast |
| Kostaganov Vladimir Aleksandrovich b. 24.01.1956 · Nominated · LDPR | Regional assembly, Bryansk Oblast, 2019 08.09.2019 · Bryansk Oblast |
| Kostaganov Vladimir Aleksandrovich b. 24.01.1956 · Nominated · LDPR | Regional assembly, Bryansk Oblast, 2024 08.09.2024 · Bryansk Oblast |
| Kostaganov Vladimir Aleksandrovich b. 24.01.1956 · Nominated · LDPR | Regional assembly, Bryansk Oblast, 2019 08.09.2019 · Bryansk Oblast |
| Kostarev Aleksandr Vladimirovich b. 1992 · Nominated · LDPR | Regional assembly, Republic of Karelia, 2026 20.09.2026 · Republic of Karelia |
| Kostarev Aleksandr Sergeevich b. 13.08.1984 · Nominated · A Just Russia | Regional assembly, Chelyabinsk Oblast, 2020 13.09.2020 · Chelyabinsk Oblast |
| Kostarev Mikhail Dmitrievich b. 09.07.1993 · Nominated · New People | Regional assembly, Perm Krai, 2021 19.09.2021 · Perm Krai |
| Kostarev Sergey Vladimirovich b. 24.06.1961 · Nominated · Yabloko | Regional assembly, Omsk Oblast, 2016 18.09.2016 · Omsk Oblast |
| Kostarev Sergey Vladimirovich b. 24.06.1961 · Nominated · Yabloko | Regional assembly, Omsk Oblast, 2016 18.09.2016 · Omsk Oblast |
| Kostelyanets Dmitriy Evgenevich b. 20.01.1994 · Nominated · A Just Russia | Regional assembly, Rostov Oblast, 2018 09.09.2018 · Rostov Oblast |
| Kostelyanets Evgeniy Leonidovich b. 12.05.1946 · Nominated · A Just Russia | Regional assembly, Rostov Oblast, 2018 09.09.2018 · Rostov Oblast |
| Kostenko Aleksandr Viktorovich b. 25.04.1987 · Nominated · CPRF | Regional assembly, Donetsk People’s Republic, 2023 10.09.2023 · Donetsk People’s Republic |
| Kostenko Aleksandr Ivanovich b. 24.10.1958 · Nominated · United Russia | Regional assembly, Primorsky Krai, 2016 18.09.2016 · Primorsky Krai |
| Kostenko Aleksandr Ivanovich b. 16.03.1957 · Nominated · CPRF | Regional assembly, Republic of Crimea, 2024 08.09.2024 · Republic of Crimea |
| Kostenko Anatoliy Svyatoslavovich b. 09.04.1956 · Nominated · A Just Russia | Regional assembly, Republic of Crimea, 2014 14.09.2014 · Republic of Crimea |
| Kostenko Valeriy Nikolaevich b. 05.11.1970 · Nominated · United Russia | Regional assembly, Republic of Adygea, 2016 18.09.2016 · Republic of Adygea |
| Kostenko Viktor Anatolevich b. 1956 · Nominated · Party of Pensioners | Regional assembly, Altai Krai, 2026 20.09.2026 · Altai Krai |
| Kostenko Viktoriya Vladimirovna b. 23.11.1977 · Nominated · United Russia | Regional assembly, Saratov Oblast, 2017 10.09.2017 · Saratov Oblast |
| Kostenko Elena Grigorevna b. 20.05.1971 · Nominated · LDPR | Regional assembly, Krasnodar Krai, 2022 11.09.2022 · Krasnodar Krai |
| Kostenko Elena Yurevna b. 09.08.1968 · Nominated · LDPR | Regional assembly, Donetsk People’s Republic, 2023 10.09.2023 · Donetsk People’s Republic |
| Kostenko Irina Viktorovna b. 24.03.1962 · Nominated · United Russia | Regional assembly, Smolensk Oblast, 2018 09.09.2018 · Smolensk Oblast |
| Kostenko Lyubov Nikolaevna b. 06.01.1961 · Nominated · Patriots of Russia | Regional assembly, Amur Oblast, 2016 18.09.2016 · Amur Oblast |
| Kostenko Tatyana Dmitrievna b. 13.08.1955 · Nominated · Rodina | Regional assembly, Rostov Oblast, 2013 08.09.2013 · Rostov Oblast |
| Kostenkov Anton Sergeevich b. 22.12.1986 · Nominated · LDPR | Regional assembly, Kaluga Oblast, 2015 13.09.2015 · Kaluga Oblast |
| Kostenok Igor Vladimirovich b. 15.03.1961 · Nominated · CPRF | Regional assembly, Donetsk People’s Republic, 2023 10.09.2023 · Donetsk People’s Republic |
| Kostetskaya Ilona Igorevna b. 1987 · Nominated · New People | Regional assembly, Republic of Karelia, 2026 20.09.2026 · Republic of Karelia |
| Kostetskaya Irina Vladimirovna b. 14.05.1965 · Nominated · The Greens | Regional assembly, Tomsk Oblast, 2016 18.09.2016 · Tomsk Oblast |
| Kostetskiy Aleksandr Vladimirovich b. 11.08.1962 · Nominated · United Russia | Regional assembly, Altai Krai, 2016 18.09.2016 · Altai Krai |
| Kostiv Vitaliy Evgenevich b. 27.06.1986 · Nominated · New People | Regional assembly, Donetsk People’s Republic, 2023 10.09.2023 · Donetsk People’s Republic |
| Kostiv Vitaliy Evgenevich b. 27.06.1986 · Nominated · New People | Regional assembly, Luhansk People’s Republic, 2023 10.09.2023 · Luhansk People’s Republic |
| Kostik Irina Anatolevna b. 18.08.1962 · Nominated · United Russia | Regional assembly, Kemerovo Oblast – Kuzbass, 2013 08.09.2013 · Kemerovo Oblast – Kuzbass |
| Kostikov Aleksandr Alekseevich b. 20.06.1958 · Nominated · Communists of Russia | Regional assembly, Tula Oblast, 2019 08.09.2019 · Tula Oblast |
