| Seregin Aleksey Stanislavovich b. 1980 · Registered · CPRF | Regional assembly, Ryazan Oblast, 2025 14.09.2025 · Ryazan Oblast |
| Seregin Vladimir Stepanovich b. 23.11.1938 · Registered · United Russia | Regional assembly, Moscow, 2005 04.12.2005 · Moscow |
| Seredich Roman Sergeevich b. 16.04.1981 · Registered · LDPR | Regional assembly, Kaliningrad Oblast, 2006 12.03.2006 · Kaliningrad Oblast |
| Serichenko Georgiy Antonovich b. 1995 · Registered · New People | Regional assembly, Chelyabinsk Oblast, 2025 14.09.2025 · Chelyabinsk Oblast |
| Serichenko Georgiy Antonovich b. 1995 · Registered · New People | Regional assembly, Chelyabinsk Oblast, 2025 14.09.2025 · Chelyabinsk Oblast |
| Serkin Oleg Yurevich b. 11.03.1958 · Registered · A Just Russia | Regional assembly, Murmansk Oblast, 2007 11.03.2007 · Murmansk Oblast |
| Serkin Oleg Yurevich b. 11.03.1958 · Registered · A Just Russia | Regional assembly, Murmansk Oblast, 2007 11.03.2007 · Murmansk Oblast |
| Serov Dmitriy Vadimovich b. 1998 · Registered · Rodina | Regional assembly, Komi Republic, 2025 14.09.2025 · Komi Republic |
| Serov Dmitriy Vadimovich b. 1998 · Registered · Rodina | Regional assembly, Voronezh Oblast, 2025 14.09.2025 · Voronezh Oblast |
| Serov Dmitriy Vadimovich b. 1998 · Registered · Rodina | Regional assembly, Novosibirsk Oblast, 2025 14.09.2025 · Novosibirsk Oblast |
| Serov Leonid Leonidovich b. 1982 · Registered · CPRF | Regional assembly, Kostroma Oblast, 2025 14.09.2025 · Kostroma Oblast |
| Serov Leonid Leonidovich b. 1982 · Registered · CPRF | Regional assembly, Kostroma Oblast, 2025 14.09.2025 · Kostroma Oblast |
| Serov Sergey Valentinovich b. 04.04.1957 · Registered · Rodina | Regional assembly, Arkhangelsk Oblast, 2004 19.12.2004 · Arkhangelsk Oblast |
| Serova Tatyana Aleksandrovna b. 29.08.1975 · Registered · LDPR | Regional assembly, Vologda Oblast, 2003 07.12.2003 · Vologda Oblast |
| Seropyan Tigran Pogosovich b. 1984 · Registered · CPRF | Regional assembly, Chelyabinsk Oblast, 2025 14.09.2025 · Chelyabinsk Oblast |
| Serper Evgeniy Aleksandrovich b. 31.07.1980 · Registered · A Just Russia | Regional assembly, Samara Oblast, 2007 11.03.2007 · Samara Oblast |
| Serpovskiy Nikolay Ivanovich b. 13.12.1951 · Registered · CPRF | Regional assembly, Tambov Oblast, 2005 18.12.2005 · Tambov Oblast |
| Serykh Svetlana Alekseevna b. 1971 · Registered · A Just Russia | Regional assembly, Republic of Adygea, 2026 20.09.2026 · Republic of Adygea |
| Sefibekov Zebiyula Demirbekovich b. 1982 · Registered · New People | Regional assembly, Republic of Dagestan, 2026 20.09.2026 · Republic of Dagestan |
| Sibgatullova Nadezhda Marsovna b. 15.01.1976 · Registered · LDPR | Regional assembly, Ulyanovsk Oblast, 2003 07.12.2003 · Ulyanovsk Oblast |
| Sibiryakov Aleksey Aleksandrovich b. 1988 · Registered · New People | Regional assembly, Komi Republic, 2025 14.09.2025 · Komi Republic |
| Sibiryakov Aleksey Aleksandrovich b. 1988 · Registered · New People | Regional assembly, Komi Republic, 2025 14.09.2025 · Komi Republic |
| Sivirkin Dmitriy Vadimovich b. 05.09.1962 · Registered · United Russia | Regional assembly, Samara Oblast, 2007 11.03.2007 · Samara Oblast |
| Sivkov Sergey Gennadevich b. 04.06.1966 · Registered · CPRF | Regional assembly, Khanty-Mansi Autonomous Okrug, 2006 12.03.2006 · Khanty-Mansi Autonomous Okrug |
| Sivov Viktor Vasilevich b. 05.12.1946 · Registered · CPRF | Regional assembly, Omsk Oblast, 2007 11.03.2007 · Omsk Oblast |
| Sigaev Sergey Pavlovich b. 18.02.1949 · Registered · CPRF | Regional assembly, Smolensk Oblast, 2002 19.05.2002 · Smolensk Oblast |
| Sigovatov Aleksandr Viktorovich b. 31.08.1962 · Registered · Patriots of Russia | Regional assembly, Saint Petersburg, 2007 11.03.2007 · Saint Petersburg |
| Sigunov Egor Vladimirovich b. 20.01.1973 · Registered · LDPR | Regional assembly, Vladimir Oblast, 2005 20.03.2005 · Vladimir Oblast |
| Sigunova Elena Vasilevna b. 1965 · Registered · The Greens | Regional assembly, Ryazan Oblast, 2025 14.09.2025 · Ryazan Oblast |
| Sidakova Natalya Vladimirovna b. 1976 · Registered · United Russia | Regional assembly, Novosibirsk Oblast, 2025 14.09.2025 · Novosibirsk Oblast |
| Sidash Anton Valerevich b. 20.04.1984 · Registered · LDPR | Regional assembly, Yamalo-Nenets Autonomous Okrug, 2015 13.09.2015 · Yamalo-Nenets Autonomous Okrug |
| Sidash Anton Valerevich b. 20.04.1984 · Registered · LDPR | Regional assembly, Yamalo-Nenets Autonomous Okrug, 2015 13.09.2015 · Yamalo-Nenets Autonomous Okrug |
| Sidelnikov Evgeniy Konstantinovich b. 25.02.1945 · Registered · CPRF | Regional assembly, Kostroma Oblast, 2005 04.12.2005 · Kostroma Oblast |
| Sidelnikov Ivan Aleksandrovich b. 07.10.1979 · Registered · United Russia | Regional assembly, Pskov Oblast, 2007 11.03.2007 · Pskov Oblast |
| Sidelnikov Pavel Vladimirovich b. 1986 · Registered · LDPR | Regional assembly, Ryazan Oblast, 2025 14.09.2025 · Ryazan Oblast |
| Sidelnikov Sergey Vladimirovich b. 1973 · Registered · A Just Russia | Regional assembly, Republic of Mordovia, 2026 20.09.2026 · Republic of Mordovia |
| Sidelnikova Lyudmila Alekseevna b. 19.04.1948 · Registered · CPRF | Regional assembly, Samara Oblast, 2007 11.03.2007 · Samara Oblast |
| Sideltsev Igor Anatolevich b. 04.09.1967 · Registered · United Russia | Regional assembly, Altai Republic, 2006 12.03.2006 · Altai Republic |
| Sidenkov Yuriy Georgievich b. 27.11.1947 · Registered · CPRF | Regional assembly, Magadan Oblast, 2005 22.05.2005 · Magadan Oblast |
| Sidorenko Aleksandr Vladimirovich b. 30.09.1972 · Registered · LDPR | Regional assembly, Pskov Oblast, 2007 11.03.2007 · Pskov Oblast |
| Sidorenko Aleksandr Vladimirovich b. 30.09.1972 · Registered · LDPR | Regional assembly, Pskov Oblast, 2007 11.03.2007 · Pskov Oblast |
| Sidorenko Aleksandr Yakovlevich b. 12.02.1948 · Registered · United Russia | Regional assembly, Republic of Kalmykia, 2003 07.12.2003 · Republic of Kalmykia |
| Sidorenko Boris Stepanovich b. 25.05.1937 · Registered · CPRF | Regional assembly, Republic of Adygea, 2006 12.03.2006 · Republic of Adygea |
| Sidorenko Viktor Egorovich b. 22.02.1956 · Registered · Party of Pensioners | Regional assembly, Kursk Oblast, 2006 12.03.2006 · Kursk Oblast |
| Sidorenko Svetlana Vladimirovna b. 1984 · Registered · A Just Russia | Regional assembly, Kaluga Oblast, 2025 14.09.2025 · Kaluga Oblast |
| Sidorenko Yuriy Viktorovich b. 1980 · Registered · A Just Russia | Regional assembly, Kaluga Oblast, 2025 14.09.2025 · Kaluga Oblast |
| Sidorin Nikolay Valerevich b. 1994 · Registered · LDPR | Regional assembly, Chelyabinsk Oblast, 2025 14.09.2025 · Chelyabinsk Oblast |
| Sidorina Nadezhda Alekseevna b. 2003 · Registered · Communists of Russia | Regional assembly, Republic of Adygea, 2026 20.09.2026 · Republic of Adygea |
| Sidorkin Denis Sergeevich b. 1980 · Registered · LDPR | Regional assembly, Novosibirsk Oblast, 2025 14.09.2025 · Novosibirsk Oblast |
| Sidorov Aleksandr Nikolaevich b. 29.01.1955 · Registered · United Russia | State Duma, 2003 07.12.2003 · Russian Federation |
