| Kostylev Leonid Evgenevich b. 08.05.1989 · Nominated · A Just Russia | Regional assembly, Republic of Bashkortostan, 2013 08.09.2013 · Republic of Bashkortostan |
| Kostylev Leonid Evgenevich b. 08.05.1989 · Nominated · A Just Russia | Regional assembly, Republic of Bashkortostan, 2013 08.09.2013 · Republic of Bashkortostan |
| Kostylev Sergey Vladimirovich b. 1976 · Elected · United Russia | Regional assembly, Chelyabinsk Oblast, 2025 14.09.2025 · Chelyabinsk Oblast |
| Kostyrev Aleksandr Nikolaevich b. 15.01.1985 · Nominated · A Just Russia | Regional assembly, Yaroslavl Oblast, 2013 08.09.2013 · Yaroslavl Oblast |
| Kostyrev Aleksandr Nikolaevich b. 15.01.1985 · Nominated · A Just Russia | Regional assembly, Yaroslavl Oblast, 2013 08.09.2013 · Yaroslavl Oblast |
| Kostyrev Aleksandr Nikolaevich b. 15.01.1985 · Nominated · A Just Russia | Regional assembly, Yaroslavl Oblast, 2018 09.09.2018 · Yaroslavl Oblast |
| Kostyrev Ilya Nikolaevich b. 10.09.1987 · Nominated · A Just Russia | Regional assembly, Yaroslavl Oblast, 2018 09.09.2018 · Yaroslavl Oblast |
| Kostyrev Ilya Nikolaevich b. 10.09.1987 · Nominated · A Just Russia | Regional assembly, Yaroslavl Oblast, 2013 08.09.2013 · Yaroslavl Oblast |
| Kostyrev Sergey Nikolaevich b. 28.07.1949 · Nominated · A Just Russia | Regional assembly, Krasnodar Krai, 2022 11.09.2022 · Krasnodar Krai |
| Kostyrev Sergey Nikolaevich b. 28.07.1949 · Nominated · A Just Russia | Regional assembly, Krasnodar Krai, 2022 11.09.2022 · Krasnodar Krai |
| Kostyreva Ekaterina Gennadevna b. 18.09.1985 · Nominated · United Russia | Regional assembly, Krasnoyarsk Krai, 2021 19.09.2021 · Krasnoyarsk Krai |
| Kostyrin Denis Vladimirovich b. 17.09.1977 · Nominated · Cossack Party | Regional assembly, Lipetsk Oblast, 2016 18.09.2016 · Lipetsk Oblast |
| Kostyrko Viktor Ivanovich b. 1948 · Registered · Party of Pensioners | Regional assembly, Omsk Oblast, 2026 20.09.2026 · Omsk Oblast |
| Kostyrko Viktor Ivanovich b. 24.05.1948 · Nominated · Party of Pensioners | Regional assembly, Omsk Oblast, 2021 19.09.2021 · Omsk Oblast |
| Kostyrya Boris Ivanovich b. 03.07.1963 · Nominated · CPRF | Regional assembly, Republic of Buryatia, 2023 10.09.2023 · Republic of Buryatia |
| Kostychakov Vladimir Fedorovich b. 10.05.1967 · Nominated · Communists of Russia | Regional assembly, Ivanovo Oblast, 2023 10.09.2023 · Ivanovo Oblast |
| Kostychakov Vladimir Fedorovich b. 10.05.1967 · Nominated · Communists of Russia | Regional assembly, Republic of Khakassia, 2023 10.09.2023 · Republic of Khakassia |
| Kostychakov Vladimir Fedorovich b. 10.05.1967 · Nominated · Communists of Russia | Regional assembly, Republic of Khakassia, 2023 10.09.2023 · Republic of Khakassia |
| Kostychakov Vladimir Fedorovich b. 1967 · Registered · Communists of Russia | Regional assembly, Ryazan Oblast, 2025 14.09.2025 · Ryazan Oblast |
| Kostychev Vladimir Igorevich b. 06.06.1986 · Nominated · Rodina | Regional assembly, Sakhalin Oblast, 2017 10.09.2017 · Sakhalin Oblast |
| Kostychev Vladimir Igorevich b. 06.06.1986 · Nominated · Rodina | Regional assembly, Udmurt Republic, 2017 10.09.2017 · Udmurt Republic |
| Kostycheva Marina Aleksandrovna b. 09.12.1989 · Nominated · Rodina | Regional assembly, Zabaykalsky Krai, 2018 09.09.2018 · Zabaykalsky Krai |
| Kostycheva Marina Aleksandrovna b. 09.12.1989 · Nominated · Rodina | Regional assembly, Arkhangelsk Oblast, 2018 09.09.2018 · Arkhangelsk Oblast |
| Kostycheva Marina Aleksandrovna b. 09.12.1989 · Nominated · Rodina | Regional assembly, Udmurt Republic, 2017 10.09.2017 · Udmurt Republic |
| Kostycheva Marina Aleksandrovna b. 09.12.1989 · Nominated · Rodina | Regional assembly, Vladimir Oblast, 2018 09.09.2018 · Vladimir Oblast |
| Kostycheva Marina Aleksandrovna b. 09.12.1989 · Nominated · Rodina | Regional assembly, Yaroslavl Oblast, 2018 09.09.2018 · Yaroslavl Oblast |
| Kostycheva Marina Aleksandrovna b. 09.12.1989 · Nominated · Rodina | Regional assembly, Sakhalin Oblast, 2017 10.09.2017 · Sakhalin Oblast |
| Kostycheva Marina Aleksandrovna b. 09.12.1989 · Nominated · Rodina | Regional assembly, Tula Oblast, 2019 08.09.2019 · Tula Oblast |
| Kostycheva Marina Aleksandrovna b. 09.12.1989 · Nominated · Rodina | Regional assembly, Irkutsk Oblast, 2018 09.09.2018 · Irkutsk Oblast |
| Kostycheva Marina Aleksandrovna b. 09.12.1989 · Nominated · Rodina | Regional assembly, Samara Oblast, 2016 18.09.2016 · Samara Oblast |
| Kostycheva Marina Aleksandrovna b. 09.12.1989 · Nominated · Rodina | Regional assembly, Khabarovsk Krai, 2019 08.09.2019 · Khabarovsk Krai |
| Kostycheva Marina Aleksandrovna b. 09.12.1989 · Nominated · Rodina | Regional assembly, Moscow, 2019 08.09.2019 · Moscow |
| Kost Tatyana Yurevna b. 13.11.1969 · Registered · United Russia | Regional assembly, Pskov Oblast, 2007 11.03.2007 · Pskov Oblast |
| Kostyugin Andrey Vyacheslavovich b. 17.04.1969 · Nominated · LDPR | Regional assembly, Leningrad Oblast, 2021 19.09.2021 · Leningrad Oblast |
| Kostyuk Aleksandr Nikolaevich b. 1993 · Registered · Yabloko | Regional assembly, Pskov Oblast, 2026 20.09.2026 · Pskov Oblast |
| Kostyuk Aleksandr Nikolaevich b. 18.07.1993 · Nominated · Yabloko | Regional assembly, Pskov Oblast, 2021 19.09.2021 · Pskov Oblast |
| Kostyuk Alla Vladimirovna b. 12.11.1949 · Nominated · Party of Pensioners | Regional assembly, Tver Oblast, 2021 19.09.2021 · Tver Oblast |
| Kostyuk Valeriya Vladimirovna b. 1984 · Nominated · Communists of Russia | Regional assembly, Kirov Oblast, 2026 20.09.2026 · Kirov Oblast |
| Kostyuk Vladimir Sergeevich b. 18.08.1958 · кандидат с отказом в регистрации · Party of Pensioners | Regional assembly, Chelyabinsk Oblast, 2015 13.09.2015 · Chelyabinsk Oblast |
| Kostyuk Ekaterina Sergeevna b. 15.08.1983 · Nominated · The Greens | Regional assembly, Sverdlovsk Oblast, 2016 18.09.2016 · Sverdlovsk Oblast |
| Kostyuk Leonid Mikhaylovich b. 06.10.1977 · Nominated · New People | Regional assembly, Belgorod Oblast, 2020 13.09.2020 · Belgorod Oblast |
| Kostyuk Leonid Mikhaylovich b. 06.10.1977 · Nominated · New People | Regional assembly, Belgorod Oblast, 2020 13.09.2020 · Belgorod Oblast |
| Kostyuk Maksim Vasilevich b. 11.09.1976 · Nominated · United Russia | Regional assembly, Khanty-Mansi Autonomous Okrug, 2016 18.09.2016 · Khanty-Mansi Autonomous Okrug |
| Kostyuk Marianna Vladimirovna b. 10.08.2000 · Nominated · New People | Regional assembly, Krasnoyarsk Krai, 2021 19.09.2021 · Krasnoyarsk Krai |
| Kostyuk Marianna Vladimirovna b. 10.08.2000 · Nominated · New People | Regional assembly, Tver Oblast, 2021 19.09.2021 · Tver Oblast |
| Kostyuk Marianna Vladimirovna b. 10.08.2000 · Nominated · New People | Regional assembly, Tyumen Oblast, 2021 19.09.2021 · Tyumen Oblast |
| Kostyuk Marianna Vladimirovna b. 10.08.2000 · Nominated · New People | Regional assembly, Vologda Oblast, 2021 19.09.2021 · Vologda Oblast |
| Kostyuk Marianna Vladimirovna b. 10.08.2000 · Nominated · New People | Regional assembly, Oryol Oblast, 2021 19.09.2021 · Oryol Oblast |
| Kostyuk Marianna Vladimirovna b. 10.08.2000 · Nominated · New People | Regional assembly, Chuvash Republic, 2021 19.09.2021 · Chuvash Republic |
| Kostyuk Marianna Vladimirovna b. 10.08.2000 · Nominated · New People | Regional assembly, Altai Krai, 2021 19.09.2021 · Altai Krai |
