| Sinkevich Yuriy Nikolaevich b. 11.11.1944 · Registered · Self-nomination | Regional assembly, Primorsky Krai, 2001 09.12.2001 · Primorsky Krai |
| Sinkov Aleksandr Nikolaevich b. 01.02.1952 · Elected deputy · Self-nomination | Regional assembly, Amur Oblast, 2005 27.03.2005 · Amur Oblast |
| Sinyugin Vasiliy Sergeevich b. 07.11.1954 · Registered · Self-nomination | Repeat · Regional assembly, Kursk Oblast, 2007 11.03.2007 · Kursk Oblast |
| Sinyuto Vasiliy Ivanovich year of birth not listed · Self-nomination | Regional assembly, Bryansk Oblast, 2004 05.12.2004 · Bryansk Oblast |
| Sinyuts Valeriy Ivanovich year of birth not listed · Self-nomination | Regional assembly, Lipetsk Oblast, 2002 14.04.2002 · Lipetsk Oblast |
| Sinyushkin Vladimir Leonidovich b. 05.02.1952 · Registered · Self-nomination | Regional assembly, Nenets Autonomous Okrug, 2001 14.01.2001 · Nenets Autonomous Okrug |
| Sinyavskiy Oleg Anatolevich b. 16.09.1973 · кандидат с отказом в регистрации · Self-nomination | Regional assembly, Tyumen Oblast, 2007 11.03.2007 · Tyumen Oblast |
| Sinyagin Aleksandr Mikhaylovich b. 13.10.1949 · Elected deputy · Self-nomination | Regional assembly, Vladimir Oblast, 2000 10.12.2000 · Vladimir Oblast |
| Sinyagin Aleksandr Mikhaylovich b. 13.10.1949 · Registered · Self-nomination | Head, Vladimir Oblast, 2000 10.12.2000 · Vladimir Oblast |
| Sinyakov Vladimir Mikhaylovich b. 05.11.1948 · Registered · Self-nomination | Regional assembly, Kaliningrad Oblast, 2000 05.11.2000 · Kaliningrad Oblast |
| Siorpas Nikolay Vladimirovich b. 04.10.1951 · Registered · Self-nomination | Regional assembly, Tuva Republic, 2006 08.10.2006 · Tuva Republic |
| Siorpas Sergey Vladimirovich b. 12.02.1955 · Registered · Self-nomination | Regional assembly, Tuva Republic, 2006 08.10.2006 · Tuva Republic |
| Siorpas Sergey Vladimirovich b. 12.02.1955 · Registered · Self-nomination | Regional assembly, Tuva Republic, 2002 02.06.2002 · Tuva Republic |
| Sipatov Valeriy Vladimirovich year of birth not listed · Self-nomination | Regional assembly, Vladimir Oblast, 2000 10.12.2000 · Vladimir Oblast |
| Sirazitdinova Alevtina Kyrgysovna b. 07.03.1942 · Registered · Self-nomination | Regional assembly, Tuva Republic, 2006 08.10.2006 · Tuva Republic |
| Sirash Aleksandr Fedorovich b. 01.05.1951 · Registered · Self-nomination | Regional assembly, Altai Krai, 2004 14.03.2004 · Altai Krai |
| Sirkina Lidiya Ivanovna b. 07.10.1968 · Nominated · Self-nomination | Regional assembly, Republic of Mordovia, 2021 19.09.2021 · Republic of Mordovia |
| Sirotenko Vladimir Mikhaylovich year of birth not listed · Self-nomination | Regional assembly, Kemerovo Oblast – Kuzbass, 2003 20.04.2003 · Kemerovo Oblast – Kuzbass |
| Sirotenko Tatyana Mikhaylovna b. 08.11.1948 · Registered · Self-nomination | Regional assembly, Primorsky Krai, 2002 09.06.2002 · Primorsky Krai |
| Sirotenko Tatyana Mikhaylovna b. 08.11.1948 · Registered · Self-nomination | Regional assembly, Primorsky Krai, 2001 09.12.2001 · Primorsky Krai |
| Sirotin Andrey Ivanovich year of birth not listed · Self-nomination | Regional assembly, Volgograd Oblast, 2003 07.12.2003 · Volgograd Oblast |
| Sirotin Igor Evgenevich b. 08.02.1963 · Registered · Self-nomination | By-election · Regional assembly, Pskov Oblast, 2004 14.03.2004 · Pskov Oblast |
| Sirotin Oleg Yurevich year of birth not listed · Self-nomination | By-election · Regional assembly, Chelyabinsk Oblast, 2004 31.10.2004 · Chelyabinsk Oblast |
| Sirotin Ruslan Anatolevich b. 1976 · Nominated · Self-nomination | Regional assembly, Kursk Oblast, 2026 20.09.2026 · Kursk Oblast |
| Sirotinskiy Aleksandr Nikolaevich year of birth not listed · Self-nomination | Regional assembly, Stavropol Krai, 2001 16.12.2001 · Stavropol Krai |
| Sirotkin Gennadiy Anatolevich b. 24.11.1953 · Registered · Self-nomination | Governor, Jewish Autonomous Oblast, 2000 26.03.2000 · Jewish Autonomous Oblast |
| Sirotkin Sergey Nikanorovich b. 14.04.1952 · Elected deputy · Self-nomination | By-election · Regional assembly, Ivanovo Oblast, 2001 04.03.2001 · Ivanovo Oblast |
| Sirotskiy Evgeniy Grigorevich b. 23.02.1956 · Registered · Self-nomination | By-election · Regional assembly, Penza Oblast, 2006 08.10.2006 · Penza Oblast |
| Sirchenko Aleksandr Aleksandrovich b. 25.01.1959 · Registered · Self-nomination | Regional assembly, Republic of Adygea, 2001 04.03.2001 · Republic of Adygea |
| Sirchenko Aleksandr Aleksandrovich year of birth not listed · Self-nomination | State Duma, 2003 07.12.2003 · Russian Federation |
| Sisauri Zurab Mikhaylovich b. 16.04.1965 · Registered · Self-nomination | Repeat · Regional assembly, Republic of North Ossetia–Alania, 2005 13.03.2005 · Republic of North Ossetia–Alania |
| Sitdikov Rudolf Mingazovich b. 10.06.1950 · Nominated · Self-nomination | Regional assembly, Republic of Tatarstan, 2014 14.09.2014 · Republic of Tatarstan |
| Sitdikova Gulyanat Fatkhutdinovna b. 10.12.1952 · Registered · Self-nomination | Regional assembly, Sakha Republic (Yakutia), 2002 29.12.2002 · Sakha Republic (Yakutia) |
| Sitekov Damir Mayranovich b. 06.03.1968 · кандидат с отказом в регистрации · Self-nomination | Regional assembly, Astrakhan Oblast, 2006 08.10.2006 · Astrakhan Oblast |
| Sitnikov Aleksandr Petrovich year of birth not listed · Self-nomination | Regional assembly, Samara Oblast, 2001 09.12.2001 · Samara Oblast |
| Sitnikov Aleksey Vladimirovich b. 19.06.1971 · Registered · Self-nomination | Regional assembly, Kostroma Oblast, 2002 08.12.2002 · Kostroma Oblast |
| Sitnikov Aleksey Vladimirovich b. 19.06.1971 · Elected deputy · Self-nomination | Repeat · Regional assembly, Kostroma Oblast, 2004 14.03.2004 · Kostroma Oblast |
| Sitnikov Valeriy Gennadevich year of birth not listed · Self-nomination | Regional assembly, Kirov Oblast, 2001 25.03.2001 · Kirov Oblast |
| Sitnikov Viktor Ivanovich year of birth not listed · Self-nomination | Regional assembly, Voronezh Oblast, 2001 25.03.2001 · Voronezh Oblast |
| Sitnikov Viktor Nikolaevich year of birth not listed · Self-nomination | Regional assembly, Voronezh Oblast, 2001 25.03.2001 · Voronezh Oblast |
| Sitnikov Vladimir Vladimirovich b. 09.04.1970 · Registered · Self-nomination | By-election · Regional assembly, Rostov Oblast, 2005 02.10.2005 · Rostov Oblast |
| Sitnikova Lyudmila Anatolevna b. 21.10.1953 · Registered · Self-nomination | Regional assembly, Udmurt Republic, 2003 06.04.2003 · Udmurt Republic |
| Sitnichenko Nikolay Dmitrievich b. 03.08.1963 · Nominated · Self-nomination | Regional assembly, Republic of Buryatia, 2018 09.09.2018 · Republic of Buryatia |
| Sitov Vladimir Mikhaylovich year of birth not listed · Self-nomination | Regional assembly, Vladimir Oblast, 2000 10.12.2000 · Vladimir Oblast |
| Sitolieva Valentina Galimovna b. 12.03.1956 · Nominated · Self-nomination | Regional assembly, Moscow, 2014 14.09.2014 · Moscow |
| Situlin Aleksandr Konstantinovich b. 01.11.1963 · Registered · Self-nomination | Regional assembly, Chuvash Republic, 2002 21.07.2002 · Chuvash Republic |
| Sikhno Galina Ivanovna b. 26.12.1946 · Registered · Self-nomination | Regional assembly, Nenets Autonomous Okrug, 2001 25.03.2001 · Nenets Autonomous Okrug |
| Sikhno Galina Ivanovna b. 26.12.1946 · Registered · Self-nomination | Regional assembly, Nenets Autonomous Okrug, 2001 14.01.2001 · Nenets Autonomous Okrug |
| Sitsukov Dmitriy Viktorovich b. 04.05.1984 · Nominated · Self-nomination | By-election · Regional assembly, Krasnoyarsk Krai, 2019 08.09.2019 · Krasnoyarsk Krai |
| Siyatskov Aleksandr Ivanovich year of birth not listed · Self-nomination | Regional assembly, Saratov Oblast, 2002 08.09.2002 · Saratov Oblast |
