| Ostroushko Dmitriy Yurevich b. 06.05.1976 · Nominated · Voters’ group | Regional assembly, Voronezh Oblast, 2020 13.09.2020 · Voronezh Oblast |
| Oskin Viktor Vasilevich year of birth not listed · Voters’ group | State Duma, 2003 07.12.2003 · Russian Federation |
| Oskin Viktor Petrovich b. 10.06.1968 · Nominated · Voters’ group | Regional assembly, Republic of Bashkortostan, 2013 08.09.2013 · Republic of Bashkortostan |
| Oskin Viktor Petrovich b. 10.06.1968 · Nominated · Voters’ group | Regional assembly, Republic of Bashkortostan, 2013 08.09.2013 · Republic of Bashkortostan |
| Oskin Sergey Vladimirovich b. 23.05.1963 · Nominated · Voters’ group | Regional assembly, Chelyabinsk Oblast, 2005 25.12.2005 · Chelyabinsk Oblast |
| Oskina Natalya Vladimirovna b. 17.04.1974 · Nominated · Voters’ group | Regional assembly, Rostov Oblast, 2018 09.09.2018 · Rostov Oblast |
| Oskina Natalya Vladimirovna b. 17.04.1974 · Nominated · Voters’ group | Regional assembly, Rostov Oblast, 2023 10.09.2023 · Rostov Oblast |
| Osmakova Olga Andreevna b. 24.08.1957 · Nominated · Voters’ group | Regional assembly, Volgograd Oblast, 2014 14.09.2014 · Volgograd Oblast |
| Osmushkin Maksim Borisovich b. 04.08.1981 · Nominated · Voters’ group | By-election · Regional assembly, Altai Krai, 2024 08.09.2024 · Altai Krai |
| Osyushkina Lyudmila Nikolaevna b. 01.10.1957 · Nominated · Voters’ group | Regional assembly, Oryol Oblast, 2016 18.09.2016 · Oryol Oblast |
| Otarov Boris Mutalibovich b. 01.08.1948 · Registered · Voters’ group | Regional assembly, Kabardino-Balkarian Republic, 2003 07.12.2003 · Kabardino-Balkarian Republic |
| Otborkin Vladimir Sergeevich b. 21.07.1976 · Nominated · Voters’ group | Regional assembly, Republic of Crimea, 2014 14.09.2014 · Republic of Crimea |
| Otborkin Vladimir Sergeevich b. 21.07.1976 · Nominated · Voters’ group | Regional assembly, Zabaykalsky Krai, 2013 08.09.2013 · Zabaykalsky Krai |
| Otborkin Vladimir Sergeevich b. 21.07.1976 · Nominated · Voters’ group | Regional assembly, Bryansk Oblast, 2014 14.09.2014 · Bryansk Oblast |
| Otborkin Vladimir Sergeevich b. 21.07.1976 · Nominated · Voters’ group | Regional assembly, Ulyanovsk Oblast, 2013 08.09.2013 · Ulyanovsk Oblast |
| Otborkin Vladimir Sergeevich b. 21.07.1976 · Nominated · Voters’ group | Regional assembly, Chechen Republic, 2013 08.09.2013 · Chechen Republic |
| Otborkin Vladimir Sergeevich b. 21.07.1976 · Nominated · Voters’ group | Regional assembly, Yaroslavl Oblast, 2013 08.09.2013 · Yaroslavl Oblast |
| Otborkin Vladimir Sergeevich b. 21.07.1976 · Nominated · Voters’ group | Regional assembly, Arkhangelsk Oblast, 2013 08.09.2013 · Arkhangelsk Oblast |
| Otborkin Vladimir Sergeevich b. 21.07.1976 · Nominated · Voters’ group | Regional assembly, Republic of Kalmykia, 2013 08.09.2013 · Republic of Kalmykia |
| Otborkin Vladimir Sergeevich b. 21.07.1976 · Nominated · Voters’ group | Regional assembly, Sakha Republic (Yakutia), 2013 08.09.2013 · Sakha Republic (Yakutia) |
| Otborkin Vladimir Sergeevich b. 21.07.1976 · Nominated · Voters’ group | Regional assembly, Kemerovo Oblast – Kuzbass, 2013 08.09.2013 · Kemerovo Oblast – Kuzbass |
| Otborkin Vladimir Sergeevich b. 21.07.1976 · Nominated · Voters’ group | Regional assembly, Smolensk Oblast, 2013 08.09.2013 · Smolensk Oblast |
| Otborkin Vladimir Sergeevich b. 21.07.1976 · Nominated · Voters’ group | Regional assembly, Republic of Buryatia, 2013 08.09.2013 · Republic of Buryatia |
| Otborkin Vladimir Sergeevich b. 21.07.1976 · Nominated · Voters’ group | Regional assembly, Novosibirsk Oblast, 2015 13.09.2015 · Novosibirsk Oblast |
| Otrakovskiy Ivan Aleksandrovich b. 1975 · Nominated · Voters’ group | President, 2024 17.03.2024 · Russian Federation |
| Okhlobystin Yuriy Aleksandrovich year of birth not listed · Voters’ group | State Duma, 2003 07.12.2003 · Russian Federation |
| Okhotnikov Aleksandr Ilich b. 19.10.1962 · Nominated · Voters’ group | Regional assembly, Republic of North Ossetia–Alania, 2017 10.09.2017 · Republic of North Ossetia–Alania |
| Okhotnikov Pavel Aleksandrovich b. 24.05.1974 · Registered · Voters’ group | Regional assembly, Ivanovo Oblast, 2005 04.12.2005 · Ivanovo Oblast |
| Okhtova Fatima Zautdinovna b. 07.08.1963 · Nominated · Voters’ group | Regional assembly, Karachay-Cherkess Republic, 2014 14.09.2014 · Karachay-Cherkess Republic |
| Ochirova Bairma Bayaskhalanovna b. 26.07.1986 · Nominated · Voters’ group | Regional assembly, Republic of Buryatia, 2018 09.09.2018 · Republic of Buryatia |
| Ochirova Zoya Mikhaylovna b. 24.06.1956 · Nominated · Voters’ group | Regional assembly, Republic of Kalmykia, 2023 10.09.2023 · Republic of Kalmykia |
| Ochirova Marina Petrovna b. 28.04.1974 · Nominated · Voters’ group | Regional assembly, Kaluga Oblast, 2015 13.09.2015 · Kaluga Oblast |
| Ochkin Mikhail Vyacheslavovich b. 26.05.1983 · Registered · Voters’ group | Regional assembly, Moscow, 2005 04.12.2005 · Moscow |
| Ochkova Elena Anatolevna b. 27.11.1990 · Nominated · Voters’ group | Regional assembly, Irkutsk Oblast, 2013 08.09.2013 · Irkutsk Oblast |
| Ochosov Yuriy Dmitrievich b. 04.12.1956 · Nominated · Voters’ group | Regional assembly, Sakha Republic (Yakutia), 2013 08.09.2013 · Sakha Republic (Yakutia) |
| Oshev Ivan Mikhaylovich b. 20.12.1982 · Nominated · Voters’ group | Regional assembly, Perm Krai, 2016 18.09.2016 · Perm Krai |
| Osheyko Aleksey Alekseevich b. 22.06.1980 · Nominated · Voters’ group | Regional assembly, Primorsky Krai, 2016 18.09.2016 · Primorsky Krai |
| Osherov Andrey Valerevich b. 01.08.1968 · Registered · Voters’ group | Regional assembly, Kostroma Oblast, 2005 04.12.2005 · Kostroma Oblast |
| Oshlapova Galina Prokopevna b. 09.01.1948 · Nominated · Voters’ group | Regional assembly, Vladimir Oblast, 2013 08.09.2013 · Vladimir Oblast |
| Oshurkov Andrey Anatolevich b. 22.12.1960 · кандидат с отказом в регистрации · Voters’ group | Regional assembly, Vologda Oblast, 2007 11.03.2007 · Vologda Oblast |
| Oshurkova Olga Nikolaevna b. 14.08.1980 · Nominated · Voters’ group | Regional assembly, Yaroslavl Oblast, 2013 08.09.2013 · Yaroslavl Oblast |
| Oschanovskiy Vladimir Iosifovich b. 23.10.1959 · Registered · Voters’ group | Regional assembly, Khabarovsk Krai, 2005 11.12.2005 · Khabarovsk Krai |
| Oschipok Oleg Stefanovich b. 17.06.1973 · Nominated · Voters’ group | Regional assembly, Sevastopol, 2014 14.09.2014 · Sevastopol |
| Oschipok Oleg Stefanovich b. 17.06.1973 · Nominated · Voters’ group | Regional assembly, Sevastopol, 2014 14.09.2014 · Sevastopol |
| Oyun Vasiliy Maylolovich b. 01.08.1964 · зарег. по проп. и маж. системам · Voters’ group | Regional assembly, Tuva Republic, 2006 08.10.2006 · Tuva Republic |
| Oyun Vasiliy Maylolovich b. 01.08.1964 · Elected deputy · Voters’ group | Regional assembly, Tuva Republic, 2006 08.10.2006 · Tuva Republic |
| Oyun Semis Davaaevna b. 15.10.1944 · Registered · Voters’ group | Regional assembly, Tuva Republic, 2006 08.10.2006 · Tuva Republic |
| Oyun Tatyana Suavnovna b. 02.05.1955 · Registered · Voters’ group | Regional assembly, Tuva Republic, 2002 02.06.2002 · Tuva Republic |
| Oyun Yuriy Bopush-oolovich b. 17.03.1962 · Withdrawn · Voters’ group | Regional assembly, Tuva Republic, 2002 02.06.2002 · Tuva Republic |
| Pavelkin Vasiliy Efimovich year of birth not listed · Voters’ group | Regional assembly, Nizhny Novgorod Oblast, 2002 31.03.2002 · Nizhny Novgorod Oblast |
