| Sidorov Vladimir Karpovich b. 1949 · Elected · United Russia | Regional assembly, Ryazan Oblast, 2025 14.09.2025 · Ryazan Oblast |
| Sidorov Vladimir Karpovich b. 15.03.1949 · Elected deputy · United Russia | Regional assembly, Ryazan Oblast, 2005 20.03.2005 · Ryazan Oblast |
| Sidorov Denis Sergeevich b. 1981 · Elected · CPRF | Regional assembly, Ryazan Oblast, 2025 14.09.2025 · Ryazan Oblast |
| Sidorok Ivan Evgenevich b. 16.05.1978 · Elected deputy · Party of Pensioners | Regional assembly, Nizhny Novgorod Oblast, 2006 12.03.2006 · Nizhny Novgorod Oblast |
| Sizikov Aleksandr Vasilevich b. 29.10.1955 · Elected deputy · United Russia | Regional assembly, Republic of Bashkortostan, 2003 16.03.2003 · Republic of Bashkortostan |
| Silantev Mikhail Sergeevich b. 08.02.1972 · Elected deputy · LDPR | Regional assembly, Arkhangelsk Oblast, 2004 19.12.2004 · Arkhangelsk Oblast |
| Simakov Konstantin Pavlovich b. 25.12.1952 · Elected deputy · United Russia | Regional assembly, Vologda Oblast, 2007 11.03.2007 · Vologda Oblast |
| Simanovskiy Aleksandr Alekseevich b. 27.04.1958 · Elected deputy · United Russia | Regional assembly, Krasnoyarsk Krai, 2007 15.04.2007 · Krasnoyarsk Krai |
| Simanovskiy Leonid Yakovlevich b. 19.07.1949 · Elected deputy · United Russia | State Duma, 2003 07.12.2003 · Russian Federation |
| Simonov Vladimir Ivanovich b. 12.05.1956 · Elected deputy · United Russia | Regional assembly, Yaroslavl Oblast, 2004 14.03.2004 · Yaroslavl Oblast |
| Simunov Lev Nikolaevich b. 22.03.1961 · Elected deputy · United Russia | Regional assembly, Chuvash Republic, 2006 08.10.2006 · Chuvash Republic |
| Sineev Vladimir Fedorovich b. 12.02.1955 · Elected deputy · CPRF | Regional assembly, Chuvash Republic, 2006 08.10.2006 · Chuvash Republic |
| Sinitsa Elena Vyacheslavovna b. 1972 · Elected · United Russia | Regional assembly, Ryazan Oblast, 2025 14.09.2025 · Ryazan Oblast |
| Sinitsin Ivan Nikolaevich b. 25.09.1958 · Elected deputy · United Russia | Regional assembly, Vladimir Oblast, 2005 20.03.2005 · Vladimir Oblast |
| Sinyukov Sergey Valerevich b. 1974 · Elected · United Russia | Regional assembly, Voronezh Oblast, 2025 14.09.2025 · Voronezh Oblast |
| Sinyagin Aleksandr Mikhaylovich b. 13.10.1949 · Elected deputy · CPRF | Regional assembly, Vladimir Oblast, 2005 20.03.2005 · Vladimir Oblast |
| Sirotkin Sergey Nikanorovich b. 14.04.1952 · Elected deputy · LDPR | State Duma, 2003 07.12.2003 · Russian Federation |
| Sitdykova Guzal Ramazanovna b. 10.06.1952 · Elected deputy · United Russia | Regional assembly, Republic of Bashkortostan, 2003 16.03.2003 · Republic of Bashkortostan |
| Sitkin Oleg Viktorovich b. 1984 · Elected · United Russia | Regional assembly, Novosibirsk Oblast, 2025 14.09.2025 · Novosibirsk Oblast |
| Sitnikov Roman Vladimirovich b. 1980 · Elected · United Russia | By-election · Regional assembly, Zabaykalsky Krai, 2025 14.09.2025 · Zabaykalsky Krai |
| Sitnikov Sergey Konstantinovich b. 1963 · Elected · United Russia | Governor, Kostroma Oblast, 2025 14.09.2025 · Kostroma Oblast |
| Sichkarev Valentin Viktorovich b. 18.09.1970 · Elected deputy · United Russia | Regional assembly, Novosibirsk Oblast, 2005 11.12.2005 · Novosibirsk Oblast |
| Skvortsov Vyacheslav Nikolaevich b. 18.08.1946 · Elected deputy · United Russia | Regional assembly, Leningrad Oblast, 2007 11.03.2007 · Leningrad Oblast |
| Sklyarov Aleksandr Ivanovich b. 18.10.1950 · Elected deputy · United Russia | Regional assembly, Belgorod Oblast, 2005 16.10.2005 · Belgorod Oblast |
| Sklyarov Ivan Petrovich b. 22.06.1948 · Elected deputy · United Russia | Regional assembly, Nizhny Novgorod Oblast, 2006 12.03.2006 · Nizhny Novgorod Oblast |
| Skobelkin Oleg Nikolaevich b. 1962 · Elected · United Russia | Regional assembly, Kostroma Oblast, 2025 14.09.2025 · Kostroma Oblast |
| Skobinov Valeriy Petrovich b. 23.08.1959 · Elected deputy · United Russia | Regional assembly, Moscow, 2005 04.12.2005 · Moscow |
| Skorobogatova Vera Igorevna b. 15.03.1961 · Elected deputy · A Just Russia | Regional assembly, Komi Republic, 2007 11.03.2007 · Komi Republic |
| Skorobogatko Aleksandr Ivanovich b. 25.09.1967 · Elected deputy · LDPR | State Duma, 2003 07.12.2003 · Russian Federation |
| Skripal Nikolay Ivanovich b. 07.04.1954 · Elected deputy · United Russia | Regional assembly, Orenburg Oblast, 2006 12.03.2006 · Orenburg Oblast |
| Skripilin Evgeniy Petrovich b. 22.12.1942 · Elected deputy · United Russia | Regional assembly, Voronezh Oblast, 2005 20.03.2005 · Voronezh Oblast |
| Skriptsov Evgeniy Nikolaevich b. 11.11.1975 · Elected deputy · United Russia | Regional assembly, Tambov Oblast, 2005 18.12.2005 · Tambov Oblast |
| Skrug Valeriy Stepanovich b. 20.06.1963 · Elected deputy · United Russia | Regional assembly, Belgorod Oblast, 2005 16.10.2005 · Belgorod Oblast |
| Skurikhin Aleksey Sergeevich b. 1974 · Elected · United Russia | Regional assembly, Yamalo-Nenets Autonomous Okrug, 2025 14.09.2025 · Yamalo-Nenets Autonomous Okrug |
| Slabov Aleksey Gennadievich b. 1970 · Elected · United Russia | Regional assembly, Kaluga Oblast, 2025 14.09.2025 · Kaluga Oblast |
| Slabov Aleksey Gennadevich b. 07.11.1970 · Elected deputy · United Russia | Regional assembly, Kaluga Oblast, 2004 14.11.2004 · Kaluga Oblast |
| Slezin Viktor Nikolaevich b. 29.05.1958 · Elected deputy · Party of Pensioners | Regional assembly, Ivanovo Oblast, 2005 04.12.2005 · Ivanovo Oblast |
| Slepokon Yuriy Ivanovich b. 18.10.1954 · Elected deputy · United Russia | Repeat · Regional assembly, Kursk Oblast, 2007 11.03.2007 · Kursk Oblast |
| Sliska Lyubov Konstantinovna b. 15.10.1953 · Elected deputy · United Russia | State Duma, 2003 07.12.2003 · Russian Federation |
| Slobodin Anatoliy Olegovich b. 02.09.1960 · Elected deputy · United Russia | Regional assembly, Chelyabinsk Oblast, 2005 25.12.2005 · Chelyabinsk Oblast |
| Slobodchuk Vitaliy Ivanovich b. 14.08.1943 · Elected deputy · United Russia | Regional assembly, Belgorod Oblast, 2005 16.10.2005 · Belgorod Oblast |
| Slutskiy Leonid Eduardovich b. 04.01.1968 · Elected deputy · LDPR | State Duma, 2003 07.12.2003 · Russian Federation |
| Slyusarenko Vadim Valerevich b. 1968 · Elected · United Russia | Regional assembly, Kostroma Oblast, 2025 14.09.2025 · Kostroma Oblast |
| Slyusar Yuriy Borisovich b. 1974 · Elected · United Russia | Governor, Rostov Oblast, 2025 14.09.2025 · Rostov Oblast |
| Smakuev Dagir Ramazanovich b. 04.09.1959 · Elected deputy · United Russia | Regional assembly, Karachay-Cherkess Republic, 2004 14.03.2004 · Karachay-Cherkess Republic |
| Smetanin Evgeniy Vasilevich b. 01.09.1950 · Elected deputy · United Russia | Regional assembly, Kirov Oblast, 2006 12.03.2006 · Kirov Oblast |
| Smirnov Aleksandr Vasilevich b. 09.05.1948 · Elected deputy · CPRF | Regional assembly, Khanty-Mansi Autonomous Okrug, 2006 12.03.2006 · Khanty-Mansi Autonomous Okrug |
| Smirnov Vitaliy Nikolaevich b. 19.11.1945 · Elected deputy · United Russia | Regional assembly, Sverdlovsk Oblast, 2006 08.10.2006 · Sverdlovsk Oblast |
| Smirnov Vladislav Anatolevich b. 21.10.1949 · Elected deputy · United Russia | Regional assembly, Lipetsk Oblast, 2006 08.10.2006 · Lipetsk Oblast |
| Smirnov Vyacheslav Vasilevich b. 27.05.1946 · Elected deputy · United Russia | Regional assembly, Ivanovo Oblast, 2005 04.12.2005 · Ivanovo Oblast |
