| Sinitsyn Evgeniy Sergeevich b. 1985 · Registered · A Just Russia | Regional assembly, Republic of Adygea, 2026 20.09.2026 · Republic of Adygea |
| Sinitsyn Igor Nikolaevich b. 1968 · Registered · United Russia | Regional assembly, Kaluga Oblast, 2025 14.09.2025 · Kaluga Oblast |
| Sinitsyn Oleg Yurevich b. 19.10.1960 · Registered · United Russia | Regional assembly, Samara Oblast, 2007 11.03.2007 · Samara Oblast |
| Sintsov Valeriy Nikolaevich b. 26.01.1965 · Registered · Patriots of Russia | Regional assembly, Samara Oblast, 2007 11.03.2007 · Samara Oblast |
| Sinchenko Stanislav Stepanovich b. 30.01.1971 · Registered · Patriots of Russia | Regional assembly, Astrakhan Oblast, 2006 08.10.2006 · Astrakhan Oblast |
| Sinyuk Kirill Yurevich b. 27.12.1982 · Registered · United Russia | Regional assembly, Krasnoyarsk Krai, 2007 15.04.2007 · Krasnoyarsk Krai |
| Sinyukov Vladimir Aleksandrovich b. 24.04.1956 · Registered · LDPR | Regional assembly, Kaluga Oblast, 2004 14.11.2004 · Kaluga Oblast |
| Sinyavskiy Aleksey Ivanovich b. 16.04.1953 · Registered · LDPR | Regional assembly, Vladimir Oblast, 2005 20.03.2005 · Vladimir Oblast |
| Sinyagina Yuliya Evgenevna b. 1989 · Registered · New People | By-election · Regional assembly, Ulyanovsk Oblast, 2026 20.09.2026 · Ulyanovsk Oblast |
| Sinyakov Vladimir Mikhaylovich b. 05.11.1948 · Registered · Patriots of Russia | Regional assembly, Kaliningrad Oblast, 2006 12.03.2006 · Kaliningrad Oblast |
| Sinyatkin Evgeniy Mikhaylovich b. 07.06.1980 · Registered · LDPR | Regional assembly, Novosibirsk Oblast, 2005 11.12.2005 · Novosibirsk Oblast |
| Sinyatkin Evgeniy Mikhaylovich b. 07.06.1980 · Registered · LDPR | Regional assembly, Novosibirsk Oblast, 2005 11.12.2005 · Novosibirsk Oblast |
| Sineva Elena Nikolaevna b. 1980 · Registered · United Russia | Regional assembly, Pskov Oblast, 2026 20.09.2026 · Pskov Oblast |
| Sipovich Lyubov Andreevna b. 13.10.1957 · Registered · The Greens | Regional assembly, Samara Oblast, 2007 11.03.2007 · Samara Oblast |
| Sirazetdinova Marina Valentinovna b. 1975 · Registered · United Russia | Regional assembly, Magadan Oblast, 2025 14.09.2025 · Magadan Oblast |
| Sirotin Igor Evgenevich b. 08.02.1963 · Registered · United Russia | Regional assembly, Pskov Oblast, 2007 11.03.2007 · Pskov Oblast |
| Sirotinskiy Aleksandr Nikolaevich b. 05.07.1959 · Registered · A Just Russia | Regional assembly, Stavropol Krai, 2007 11.03.2007 · Stavropol Krai |
| Sirotinskiy Konstantin Nikolaevich b. 19.04.1966 · Registered · CPRF | Regional assembly, Stavropol Krai, 2007 11.03.2007 · Stavropol Krai |
| Sirotkin Andrey Aleksandrovich b. 03.05.1974 · Registered · LDPR | Regional assembly, Tver Oblast, 2005 18.12.2005 · Tver Oblast |
| Sirotkin Andrey Aleksandrovich b. 03.05.1974 · Registered · LDPR | Regional assembly, Tver Oblast, 2005 18.12.2005 · Tver Oblast |
| Sirotkin Sergey Nikanorovich b. 14.04.1952 · Registered · LDPR | State Duma, 2003 07.12.2003 · Russian Federation |
| Sirotkin Sergey Nikanorovich b. 14.04.1952 · Registered · LDPR | Regional assembly, Ivanovo Oblast, 2000 03.12.2000 · Ivanovo Oblast |
| Siryachenko Alina Vladimirovna b. 2002 · Registered · Communists of Russia | Regional assembly, Komi Republic, 2025 14.09.2025 · Komi Republic |
| Sisina Ekaterina Anatolevna b. 1969 · Registered · CPRF | Regional assembly, Chelyabinsk Oblast, 2025 14.09.2025 · Chelyabinsk Oblast |
| Sisina Ekaterina Anatolevna b. 1969 · Registered · CPRF | Regional assembly, Chelyabinsk Oblast, 2025 14.09.2025 · Chelyabinsk Oblast |
| Sitkin Konstantin Ivanovich b. 1993 · Registered · LDPR | Regional assembly, Pskov Oblast, 2026 20.09.2026 · Pskov Oblast |
| Sitkin Konstantin Ivanovich b. 1993 · Registered · LDPR | Regional assembly, Pskov Oblast, 2026 20.09.2026 · Pskov Oblast |
| Sitnikov Aleksey Vladimirovich b. 1971 · Registered · United Russia | Regional assembly, Kostroma Oblast, 2025 14.09.2025 · Kostroma Oblast |
| Sitnikov Aleksey Vladimirovich b. 19.06.1971 · Registered · United Russia | Regional assembly, Kostroma Oblast, 2005 04.12.2005 · Kostroma Oblast |
| Sitnikov Aleksey Vladimirovich b. 19.06.1971 · Registered · United Russia | Regional assembly, Kostroma Oblast, 2005 04.12.2005 · Kostroma Oblast |
| Sitnikov Artem Vyacheslavovich b. 2003 · Registered · The Greens | Regional assembly, Novosibirsk Oblast, 2025 14.09.2025 · Novosibirsk Oblast |
| Sitnikov Vladimir Konstantinovich b. 1985 · Registered · CPRF | Regional assembly, Republic of Adygea, 2026 20.09.2026 · Republic of Adygea |
| Sitnikov Denis Sergeevich b. 1999 · Registered · New People | Regional assembly, Republic of Mordovia, 2026 20.09.2026 · Republic of Mordovia |
| Sitnikov Kirill Yurevich b. 1987 · Registered · Party of Pensioners | Regional assembly, Kaluga Oblast, 2025 14.09.2025 · Kaluga Oblast |
| Sitnikov Kirill Yurevich b. 1987 · Registered · Party of Pensioners | Regional assembly, Chelyabinsk Oblast, 2025 14.09.2025 · Chelyabinsk Oblast |
| Sitnikov Kirill Yurevich b. 1987 · Registered · Party of Pensioners | Regional assembly, Kurgan Oblast, 2025 14.09.2025 · Kurgan Oblast |
| Sitnikov Kirill Yurevich b. 1987 · Registered · Party of Pensioners | Regional assembly, Chelyabinsk Oblast, 2025 14.09.2025 · Chelyabinsk Oblast |
| Sitnikov Nikolay Aleksandrovich b. 02.07.1948 · Registered · LDPR | Regional assembly, Vologda Oblast, 2007 11.03.2007 · Vologda Oblast |
| Sitnikov Nikolay Aleksandrovich b. 1952 · Registered · United Russia | Regional assembly, Omsk Oblast, 2026 20.09.2026 · Omsk Oblast |
| Sitnikov Roman Gennadevich b. 24.12.1973 · Registered · LDPR | Regional assembly, Tambov Oblast, 2005 18.12.2005 · Tambov Oblast |
| Sitnikov Roman Gennadevich b. 24.12.1973 · Registered · LDPR | Regional assembly, Tambov Oblast, 2005 18.12.2005 · Tambov Oblast |
| Sitnikov Sergey Konstantinovich b. 18.01.1963 · Registered · United Russia | Regional assembly, Kostroma Oblast, 2005 04.12.2005 · Kostroma Oblast |
| Sitnikov Yuriy Sergeevich b. 13.09.1958 · Registered · United Russia | Regional assembly, Republic of Khakassia, 2004 26.12.2004 · Republic of Khakassia |
| Sitnikov Yuriy Sergeevich b. 13.09.1958 · Registered · United Russia | Regional assembly, Republic of Khakassia, 2004 26.12.2004 · Republic of Khakassia |
| Sitnikova Marina Sergeevna b. 1984 · Registered · CPRF | Regional assembly, Republic of Adygea, 2026 20.09.2026 · Republic of Adygea |
| Sitnyanskiy Igor Borisovich b. 24.02.1963 · Registered · Patriots of Russia | Regional assembly, Leningrad Oblast, 2007 11.03.2007 · Leningrad Oblast |
| Siyukhov Ilyas Khasanbievich b. 20.10.1953 · Registered · Patriots of Russia | Regional assembly, Republic of Adygea, 2006 12.03.2006 · Republic of Adygea |
| Siyukhov Timur Madinovich b. 1987 · Registered · Communists of Russia | Regional assembly, Republic of Adygea, 2026 20.09.2026 · Republic of Adygea |
| Siyukhov Khazret Kazbekovich b. 1992 · Registered · LDPR | Regional assembly, Republic of Adygea, 2026 20.09.2026 · Republic of Adygea |
| Siyanskiy Yuriy Anatolevich b. 11.01.1962 · Registered · Party of Pensioners | Regional assembly, Kurgan Oblast, 2004 28.11.2004 · Kurgan Oblast |
