| Kostina Olga Andreevna b. 03.05.1957 · Nominated · United Russia | Regional assembly, Khabarovsk Krai, 2014 14.09.2014 · Khabarovsk Krai |
| 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 |
| Kostina Rimma Vasilevna b. 19.08.1934 · Nominated · Party of Pensioners | Regional assembly, Nenets Autonomous Okrug, 2014 14.09.2014 · Nenets Autonomous Okrug |
| Kostina Tatyana Yurevna b. 17.05.1964 · Nominated · Communists of Russia | Regional assembly, Yaroslavl Oblast, 2023 10.09.2023 · Yaroslavl Oblast |
| Kostina Tatyana Yurevna b. 17.05.1964 · Nominated · Communists of Russia | Regional assembly, Yaroslavl Oblast, 2023 10.09.2023 · Yaroslavl Oblast |
| Kostina Faina Anatolevna b. 08.06.1956 · Nominated · Party of Pensioners | Regional assembly, Udmurt Republic, 2022 11.09.2022 · Udmurt Republic |
| Kostina Faina Anatolevna b. 08.06.1956 · Nominated · Party of Pensioners | Regional assembly, Udmurt Republic, 2022 11.09.2022 · Udmurt Republic |
| Kostitsin Aleksey Vladimirovich b. 09.06.1976 · Nominated · CPRF | Regional assembly, Perm Krai, 2021 19.09.2021 · Perm Krai |
| Kostogriz Ivan Ivanovich b. 18.02.1960 · Nominated · United Russia | Regional assembly, Yamalo-Nenets Autonomous Okrug, 2020 13.09.2020 · Yamalo-Nenets Autonomous Okrug |
| Kostogryz Igor Viktorovich b. 01.07.1965 · Nominated · CPRF | Regional assembly, Khanty-Mansi Autonomous Okrug, 2021 19.09.2021 · Khanty-Mansi Autonomous Okrug |
| Kostogryz Igor Viktorovich b. 01.07.1965 · Nominated · CPRF | Regional assembly, Tyumen Oblast, 2021 19.09.2021 · Tyumen Oblast |
| Kostogryz Igor Viktorovich b. 1965 · Registered · CPRF | Regional assembly, Khanty-Mansi Autonomous Okrug – Yugra, 2026 20.09.2026 · Khanty-Mansi Autonomous Okrug |
| Kostoev Abubakar Khasanovich b. 30.06.1967 · Nominated · United Russia | Regional assembly, Republic of Ingushetia, 2021 19.09.2021 · Republic of Ingushetia |
| Kostoev Adam Yakubovich b. 10.05.1977 · Nominated · CPRF | Regional assembly, Altai Krai, 2021 19.09.2021 · Altai Krai |
| Kostoev Aliskhan Akhmetovich b. 15.10.1995 · Nominated · LDPR | Regional assembly, Republic of Ingushetia, 2021 19.09.2021 · Republic of Ingushetia |
| Kostoev Aliskhan Akhmetovich b. 1995 · Registered · LDPR | Regional assembly, Republic of Ingushetia, 2026 20.09.2026 · Republic of Ingushetia |
| Kostoev Aliskhan Akhmetovich b. 15.10.1995 · Nominated · LDPR | Regional assembly, Republic of Dagestan, 2021 19.09.2021 · Republic of Dagestan |
| Kostoev Aslan Khusenovich b. 1990 · Registered · United Russia | Regional assembly, Republic of Ingushetia, 2026 20.09.2026 · Republic of Ingushetia |
| Kostoev Akhmed Bashirovich b. 18.10.1976 · Nominated · United Russia | Regional assembly, Republic of Ingushetia, 2021 19.09.2021 · Republic of Ingushetia |
| Kostoev Issa Magometovich b. 08.08.1942 · Nominated · United Russia | Regional assembly, Republic of Ingushetia, 2021 19.09.2021 · Republic of Ingushetia |
| Kostoev Umar Batyrovich b. 06.10.1984 · Nominated · LDPR | Regional assembly, Republic of Dagestan, 2021 19.09.2021 · Republic of Dagestan |
| Kostoev Umar Batyrovich b. 1984 · Registered · LDPR | Regional assembly, Republic of Ingushetia, 2026 20.09.2026 · Republic of Ingushetia |
| Kostoev Umar Batyrovich b. 06.10.1984 · Nominated · LDPR | Regional assembly, Republic of Ingushetia, 2021 19.09.2021 · Republic of Ingushetia |
| Kostoev Yakhya Akhmetovich year of birth not listed · Yabloko | Regional assembly, Republic of Ingushetia, 2003 07.12.2003 · 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 |
| Kostomarov Pavel Ivanovich b. 09.02.1992 · Nominated · LDPR | Regional assembly, Irkutsk Oblast, 2013 08.09.2013 · Irkutsk Oblast |
| Kostomarova Polina Vyacheslavovna b. 06.08.1983 · Nominated · New People | Regional assembly, Tula Oblast, 2024 08.09.2024 · Tula Oblast |
| Kostomakha Yuriy Vitalevich b. 12.02.1996 · Nominated · United Russia | Regional assembly, Krasnodar Krai, 2022 11.09.2022 · Krasnodar Krai |
| Kostomakha Yuriy Vitalevich b. 12.02.1996 · Nominated · United Russia | Regional assembly, Krasnodar Krai, 2017 10.09.2017 · Krasnodar Krai |
| Kostokhov Boris Dautovich year of birth not listed · Patriots of Russia | State Duma, 2003 07.12.2003 · Russian Federation |
| Kostochakov Igor Alekseevich b. 14.11.1994 · Nominated · LDPR | Regional assembly, Republic of Khakassia, 2023 10.09.2023 · Republic of Khakassia |
| Kostochkina Elena Mikhaylovna b. 12.10.1980 · Nominated · LDPR | Regional assembly, Arkhangelsk Oblast, 2013 08.09.2013 · Arkhangelsk Oblast |
| Kostrenkova Yuliya Vladimirovna b. 23.04.1979 · Nominated · Communists of Russia | Regional assembly, Republic of Crimea, 2019 08.09.2019 · Republic of Crimea |
| Kostrizh Aleksandr Vasilevich b. 22.07.1962 · Nominated · CPRF | Regional assembly, Zaporizhzhia Oblast, 2023 10.09.2023 · Zaporizhzhia Oblast |
| Kostrikin Aleksandr Borisovich b. 01.11.1955 · Registered · LDPR | Regional assembly, Murmansk Oblast, 2007 11.03.2007 · Murmansk Oblast |
| Kostrikin Vladimir Viktorovich b. 02.12.1958 · Nominated · United Russia | Regional assembly, Kursk Oblast, 2016 18.09.2016 · Kursk Oblast |
| Kostrikin Vladimir Viktorovich b. 02.12.1958 · Elected deputy · United Russia | Regional assembly, Kursk Oblast, 2006 12.03.2006 · Kursk Oblast |
| Kostrikin Vyacheslav Petrovich b. 16.02.1955 · Nominated · Party of Pensioners | Regional assembly, Sverdlovsk Oblast, 2016 18.09.2016 · Sverdlovsk Oblast |
| Kostrikina Olesya Nikolaevna b. 1986 · Nominated · New People | Regional assembly, Tambov Oblast, 2026 20.09.2026 · Tambov Oblast |
| Kostrikov Aleksandr Aleksandrovich b. 31.12.1980 · Registered · A Just Russia | Regional assembly, Oryol Oblast, 2007 11.03.2007 · Oryol Oblast |
| Kostrikov Sergey Lukich b. 06.02.1950 · Nominated · Communists of Russia | Regional assembly, Krasnoyarsk Krai, 2016 18.09.2016 · Krasnoyarsk Krai |
| Kostrikov Yuriy Viktorovich b. 29.01.1985 · Nominated · Yabloko | Regional assembly, Vologda Oblast, 2016 18.09.2016 · Vologda Oblast |
| Kostrin Valentin Ivanovich b. 24.02.1945 · Nominated · CPRF | Regional assembly, Republic of Tatarstan, 2014 14.09.2014 · Republic of Tatarstan |
| 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 |
