| Osadchiy Oleg Vladimirovich b. 16.08.1951 · Nominated · Self-nomination | Regional assembly, Republic of Crimea, 2014 14.09.2014 · Republic of Crimea |
| Osadchiy Sergey Yurevich year of birth not listed · Self-nomination | Regional assembly, Moscow, 2001 16.12.2001 · Moscow |
| Osadchuk Dmitriy Nikolaevich year of birth not listed · Self-nomination | Regional assembly, Leningrad Oblast, 2001 16.12.2001 · Leningrad Oblast |
| Osanov Vladimir Nikolaevich b. 13.04.1959 · Registered · Self-nomination | Regional assembly, Chuvash Republic, 2002 21.07.2002 · Chuvash Republic |
| Osanov Vladimir Nikolaevich b. 13.04.1959 · Elected deputy · Self-nomination | Regional assembly, Chuvash Republic, 2002 08.12.2002 · Chuvash Republic |
| Osaulenko Ilya Igorevich b. 15.10.1993 · Nominated · Self-nomination | Regional assembly, Ivanovo Oblast, 2023 10.09.2023 · Ivanovo Oblast |
| Osaulenko Ilya Igorevich b. 15.10.1993 · Nominated · Self-nomination | Regional assembly, Yaroslavl Oblast, 2023 10.09.2023 · Yaroslavl Oblast |
| Oseychuk Vladimir Ivanovich b. 04.04.1956 · Nominated · Self-nomination | By-election · Regional assembly, Tyumen Oblast, 2020 13.09.2020 · Tyumen Oblast |
| Osetrov Aleksandr Nikolaevich b. 25.03.1956 · Withdrawn · Self-nomination | Regional assembly, Republic of Bashkortostan, 2003 16.03.2003 · Republic of Bashkortostan |
| Osin Viktor Konstantinovich b. 03.09.1953 · Elected deputy · Self-nomination | Regional assembly, Novosibirsk Oblast, 2001 02.12.2001 · Novosibirsk Oblast |
| Osin Vladimir Ivanovich year of birth not listed · Self-nomination | State Duma, 2003 07.12.2003 · Russian Federation |
| Osinin Nikolay Aleksandrovich b. 24.02.1957 · Registered · Self-nomination | Regional assembly, Mari El Republic, 2000 08.10.2000 · Mari El Republic |
| Osinkin Sergey Aleksandrovich year of birth not listed · Self-nomination | Regional assembly, Ivanovo Oblast, 2000 03.12.2000 · Ivanovo Oblast |
| Osinnaya Larisa Grigorevna b. 04.07.1956 · Registered · Self-nomination | Regional assembly, Khanty-Mansi Autonomous Okrug, 2001 14.01.2001 · Khanty-Mansi Autonomous Okrug |
| Osipenko Aleksandr Viktorovich b. 03.07.1977 · Nominated · Self-nomination | Regional assembly, Yamalo-Nenets Autonomous Okrug, 2020 13.09.2020 · Yamalo-Nenets Autonomous Okrug |
| Osipenko Anatoliy Yurevich b. 19.03.1959 · кандидат с отказом в регистрации · Self-nomination | Repeat · State Duma, 2005 04.12.2005 · Russian Federation |
| Osipenko Igor Vladimirovich b. 14.08.1969 · Nominated · Self-nomination | Regional assembly, Sakhalin Oblast, 2022 11.09.2022 · Sakhalin Oblast |
| Osipenko Nikolay Mikhaylovich b. 18.09.1948 · Registered · Self-nomination | Regional assembly, Primorsky Krai, 2001 09.12.2001 · Primorsky Krai |
| Osipenkov Nikolay Ivanovich year of birth not listed · Self-nomination | Regional assembly, Smolensk Oblast, 2002 19.05.2002 · Smolensk Oblast |
| Osipkin Nikolay Ivanovich year of birth not listed · Self-nomination | Regional assembly, Bryansk Oblast, 2003 23.03.2003 · Bryansk Oblast |
| Osipov Aleksandr Viktorovich b. 06.08.1961 · Registered · Self-nomination | Regional assembly, Chelyabinsk Oblast, 2005 25.12.2005 · Chelyabinsk Oblast |
| Osipov Aleksandr Viktorovich b. 06.08.1961 · кандидат с отказом в регистрации · Self-nomination | Regional assembly, Chelyabinsk Oblast, 2005 25.12.2005 · Chelyabinsk Oblast |
| Osipov Aleksandr Vyacheslavovich year of birth not listed · Self-nomination | Regional assembly, Moscow Oblast, 2001 16.12.2001 · Moscow Oblast |
| Osipov Aleksandr Pavlovich b. 22.11.1957 · Registered · Self-nomination | Regional assembly, Chuvash Republic, 2002 21.07.2002 · Chuvash Republic |
| Osipov Valeriy Evgenevich year of birth not listed · Self-nomination | Repeat · Regional assembly, Ulyanovsk Oblast, 2004 05.12.2004 · Ulyanovsk Oblast |
| Osipov Vasiliy Vasilevich b. 23.09.1953 · Registered · Self-nomination | Regional assembly, Chuvash Republic, 2002 21.07.2002 · Chuvash Republic |
| Osipov Viktor Viktorovich b. 05.07.1960 · Registered · Self-nomination | Regional assembly, Rostov Oblast, 2003 30.03.2003 · Rostov Oblast |
| Osipov Viktor Petrovich year of birth not listed · Self-nomination | Regional assembly, Kursk Oblast, 2001 14.01.2001 · Kursk Oblast |
| Osipov Viktor Yurevich b. 15.08.1962 · Registered · Self-nomination | Regional assembly, Stavropol Krai, 2007 11.03.2007 · Stavropol Krai |
| Osipov Viktor Yurevich year of birth not listed · Self-nomination | Regional assembly, Stavropol Krai, 2001 16.12.2001 · Stavropol Krai |
| Osipov Vladimir Pavlovich year of birth not listed · Self-nomination | Regional assembly, Penza Oblast, 2002 14.04.2002 · Penza Oblast |
| Osipov Evgeniy Vasilevich year of birth not listed · Self-nomination | By-election · Regional assembly, Ivanovo Oblast, 2001 04.03.2001 · Ivanovo Oblast |
| Osipov Maksim Alekseevich b. 24.11.1971 · Registered · Self-nomination | Regional assembly, Saint Petersburg, 2002 08.12.2002 · Saint Petersburg |
| Osipov Oleg Borisovich b. 25.04.1979 · Nominated · Self-nomination | Regional assembly, Moscow, 2019 08.09.2019 · Moscow |
| Osipov Sergey Anatolevich year of birth not listed · Self-nomination | Regional assembly, Leningrad Oblast, 2001 16.12.2001 · Leningrad Oblast |
| Osipov Fedor Fedorovich b. 25.12.1955 · Nominated · Self-nomination | Regional assembly, Amur Oblast, 2016 18.09.2016 · Amur Oblast |
| Osipova Nadezhda Sergeevna b. 12.10.1957 · Registered · Self-nomination | Regional assembly, Yaroslavl Oblast, 2000 26.03.2000 · Yaroslavl Oblast |
| Osipyan Rantik Galustovich b. 18.07.1947 · Registered · Self-nomination | Regional assembly, Arkhangelsk Oblast, 2000 18.06.2000 · Arkhangelsk Oblast |
| Oskanov Abdul-Vagap Martaskovich b. 21.12.1946 · Registered · Self-nomination | Regional assembly, Republic of Ingushetia, 2003 07.12.2003 · Republic of Ingushetia |
| Oskanov Alikhan Abukarovich b. 07.08.1949 · Registered · Self-nomination | Regional assembly, Republic of Ingushetia, 2003 07.12.2003 · Republic of Ingushetia |
| Oskirko Irina Anatolevna b. 14.03.1977 · утративший статус выдв. кандидата · Self-nomination | Repeat · Regional assembly, Irkutsk Oblast, 2005 20.03.2005 · Irkutsk Oblast |
| Oskirko Nikolay Nikolaevich year of birth not listed · Self-nomination | Governor, Krasnoyarsk Krai, 2002 08.09.2002 · Krasnoyarsk Krai |
| Oskirko Nikolay Nikolaevich year of birth not listed · Self-nomination | State Duma, 2003 07.12.2003 · Russian Federation |
| Oskirko Nikolay Nikolaevich year of birth not listed · Self-nomination | Governor, Krasnoyarsk Krai, 2002 08.09.2002 · Krasnoyarsk Krai |
| Oskolkov Andrey Eduardovich b. 04.02.1964 · Elected deputy · Self-nomination | Regional assembly, Udmurt Republic, 2003 06.04.2003 · Udmurt Republic |
| Oskolok Sergey Konstantinovich b. 29.09.1945 · Elected deputy · Self-nomination | Regional assembly, Republic of Tatarstan, 2004 14.03.2004 · Republic of Tatarstan |
| Oskorbina Zoya Aleksandrovna b. 17.08.1959 · Registered · Self-nomination | Regional assembly, Republic of Buryatia, 2002 23.06.2002 · Republic of Buryatia |
| Osmaev Amin Akhmedovich b. 08.10.1948 · Registered · Self-nomination | State Duma, 2000 20.08.2000 · Russian Federation |
| Osmaev Amin Akhmedovich b. 08.10.1948 · Registered · Self-nomination | Regional assembly, Chechen Republic, 2005 27.11.2005 · Chechen Republic |
| Osmanov Abdurakhman Osmanovich year of birth not listed · Self-nomination | Regional assembly, Republic of Dagestan, 2003 16.03.2003 · Republic of Dagestan |
