| Ognev Evgeniy Mikhaylovich b. 25.09.1972 · Nominated · Self-nomination | By-election · Regional assembly, Khabarovsk Krai, 2020 13.09.2020 · Khabarovsk Krai |
| Ogurtsov Valeriy Borisovich b. 06.05.1958 · Nominated · Self-nomination | Repeat · Regional assembly, Chelyabinsk Oblast, 2006 08.10.2006 · Chelyabinsk Oblast |
| Oynoshev Vasiliy Petrovich b. 20.04.1960 · Nominated · Self-nomination | Regional assembly, Altai Republic, 2014 14.09.2014 · Altai Republic |
| Okorokov Andrey Nikolaevich b. 22.01.1958 · Nominated · Self-nomination | Regional assembly, Sakha Republic (Yakutia), 2018 09.09.2018 · Sakha Republic (Yakutia) |
| Okunev Konstantin Nikolaevich b. 05.12.1968 · Nominated · Self-nomination | Regional assembly, Perm Krai, 2016 18.09.2016 · Perm Krai |
| Oleynik Vitaliy Viktorovich b. 03.12.1971 · Nominated · Self-nomination | Regional assembly, Republic of Crimea, 2019 08.09.2019 · Republic of Crimea |
| Oleshko Eduard Rostislavovich b. 1963 · Nominated · Self-nomination | Regional assembly, Leningrad Oblast, 2026 20.09.2026 · Leningrad Oblast |
| Omarov Gadzhimurad Zairbekovich b. 1962 · Nominated · Self-nomination | State Duma, 2026 20.09.2026 · Russian Federation |
| Ongerty Aleksey Tyulyushevich b. 06.10.1960 · Nominated · Self-nomination | Regional assembly, Tuva Republic, 2014 14.09.2014 · Tuva Republic |
| Ondar Amir Khuren-oolovich b. 07.05.1970 · Nominated · Self-nomination | By-election · Regional assembly, Tuva Republic, 2022 11.09.2022 · Tuva Republic |
| Ondar Say-Suu Sergeevna b. 28.02.1979 · Nominated · Self-nomination | Repeat · Regional assembly, Tuva Republic, 2004 30.05.2004 · Tuva Republic |
| Ondar Sayan Oyun-oolovich b. 14.02.1995 · Nominated · Self-nomination | Regional assembly, Tuva Republic, 2024 08.09.2024 · Tuva Republic |
| Ondar Urana Khapyn-oolovna b. 05.05.1968 · Nominated · Self-nomination | Regional assembly, Tuva Republic, 2014 14.09.2014 · Tuva Republic |
| Oorzhak Andrey Angyr-oolovich b. 20.05.1980 · Nominated · Self-nomination | Regional assembly, Tuva Republic, 2019 08.09.2019 · Tuva Republic |
| Oorzhak Renat Chadambaevich b. 27.10.1980 · Nominated · Self-nomination | Regional assembly, Tuva Republic, 2019 08.09.2019 · Tuva Republic |
| Ordakhov Valeriy Valerevich b. 20.08.1991 · Nominated · Self-nomination | Regional assembly, Sakha Republic (Yakutia), 2013 08.09.2013 · Sakha Republic (Yakutia) |
| Orel Dmitriy Vyacheslavovich b. 16.01.1970 · Nominated · Self-nomination | Repeat · Regional assembly, Saint Petersburg, 2005 13.03.2005 · Saint Petersburg |
| Oreshina Elena Valerevna b. 08.10.1970 · Nominated · Self-nomination | Regional assembly, Republic of Mordovia, 2016 18.09.2016 · Republic of Mordovia |
| Oreshkina Tatyana Sergeevna b. 26.09.1980 · Nominated · Self-nomination | Regional assembly, Volgograd Oblast, 2019 08.09.2019 · Volgograd Oblast |
| Oreschenko Pavel Pavlovich b. 10.11.1991 · Nominated · Self-nomination | Regional assembly, Novosibirsk Oblast, 2015 13.09.2015 · Novosibirsk Oblast |
| Orlenko Nikolay Nikolaevich b. 18.02.1973 · Nominated · Self-nomination | Regional assembly, Irkutsk Oblast, 2013 08.09.2013 · Irkutsk Oblast |
| Orlov Andrey Igorevich b. 24.01.1983 · Nominated · Self-nomination | Regional assembly, Leningrad Oblast, 2021 19.09.2021 · Leningrad Oblast |
| Orlov Maksim Gennadevich b. 16.08.1990 · Nominated · Self-nomination | Regional assembly, Republic of Buryatia, 2013 08.09.2013 · Republic of Buryatia |
| Orlov Roman Anatolevich b. 16.09.1976 · Nominated · Self-nomination | Regional assembly, Rostov Oblast, 2018 09.09.2018 · Rostov Oblast |
| Orlov Sergey Anatolevich b. 18.05.1961 · Nominated · Self-nomination | By-election · Regional assembly, Tver Oblast, 2020 13.09.2020 · Tver Oblast |
| Orlov Stepan Vladimirovich b. 22.10.1971 · Nominated · Self-nomination | Regional assembly, Moscow, 2019 08.09.2019 · Moscow |
| Orlovskiy Aleksey Andreevich b. 13.03.1969 · Nominated · Self-nomination | Regional assembly, Tomsk Oblast, 2016 18.09.2016 · Tomsk Oblast |
| Orlovskiy Aleksey Andreevich b. 13.03.1969 · Nominated · Self-nomination | Regional assembly, Tomsk Oblast, 2021 19.09.2021 · Tomsk Oblast |
| Orobets Ivan Nikolaevich b. 22.07.1950 · Nominated · Self-nomination | Regional assembly, Arkhangelsk Oblast, 2013 08.09.2013 · Arkhangelsk Oblast |
| Osadchiy Valentin Grigorevich b. 18.04.1950 · Nominated · Self-nomination | Regional assembly, Volgograd Oblast, 2014 14.09.2014 · Volgograd Oblast |
| Osadchiy Oleg Vladimirovich b. 16.08.1951 · Nominated · Self-nomination | Regional assembly, Republic of Crimea, 2014 14.09.2014 · Republic of Crimea |
| 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 |
| 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 Igor Vladimirovich b. 14.08.1969 · Nominated · Self-nomination | Regional assembly, Sakhalin Oblast, 2022 11.09.2022 · Sakhalin Oblast |
| Osipov Oleg Borisovich b. 25.04.1979 · Nominated · Self-nomination | Regional assembly, Moscow, 2019 08.09.2019 · Moscow |
| Osipov Fedor Fedorovich b. 25.12.1955 · Nominated · Self-nomination | Regional assembly, Amur Oblast, 2016 18.09.2016 · Amur Oblast |
| Ostapyuk Vladimir Nikolaevich b. 14.03.1960 · Nominated · Self-nomination | Regional assembly, Primorsky Krai, 2016 18.09.2016 · Primorsky Krai |
| Ostashko Ruslan Stanislavovich b. 18.02.1979 · Nominated · Self-nomination | Regional assembly, Sevastopol, 2019 08.09.2019 · Sevastopol |
| Ostrovskiy Evgeniy Valerevich b. 17.03.1984 · Nominated · Self-nomination | Regional assembly, Kamchatka Krai, 2016 18.09.2016 · Kamchatka Krai |
| Ostrovskiy Oleg Aleksandrovich b. 24.07.1980 · Nominated · Self-nomination | Regional assembly, Tomsk Oblast, 2016 18.09.2016 · Tomsk Oblast |
| Ostroushko Valentina Viktorovna b. 16.05.1965 · Nominated · Self-nomination | Regional assembly, Oryol Oblast, 2021 19.09.2021 · Oryol Oblast |
| Ostroushko Valentina Viktorovna b. 16.05.1965 · Nominated · Self-nomination | Regional assembly, Oryol Oblast, 2021 19.09.2021 · Oryol Oblast |
| Osyak Aleksandr Evgenevich b. 16.05.1989 · Nominated · Self-nomination | Regional assembly, Rostov Oblast, 2018 09.09.2018 · Rostov Oblast |
| Otamas Viktor Sergeevich b. 03.08.1970 · Nominated · Self-nomination | Regional assembly, Stavropol Krai, 2021 19.09.2021 · Stavropol Krai |
| Ochirov Aldar Bimbaevich b. 27.09.1979 · Nominated · Self-nomination | Regional assembly, Republic of Buryatia, 2013 08.09.2013 · Republic of Buryatia |
| Ochirov Buyanto Dorzhibalovich b. 17.07.1990 · Nominated · Self-nomination | Regional assembly, Republic of Buryatia, 2023 10.09.2023 · Republic of Buryatia |
| Ochkin Mikhail Vyacheslavovich b. 26.05.1983 · Nominated · Self-nomination | By-election · Regional assembly, Moscow, 2021 19.09.2021 · Moscow |
| Oyun Mikhail Kara-oolovich b. 17.05.1980 · Nominated · Self-nomination | Regional assembly, Tuva Republic, 2019 08.09.2019 · Tuva Republic |
