| Osmanov Kurbanali Magomedbekovich b. 2004 · Registered · New People | Regional assembly, Republic of Dagestan, 2026 20.09.2026 · Republic of Dagestan |
| Osmanov Ruslan Khaybulaevich b. 11.09.1969 · Registered · LDPR | Regional assembly, Republic of Dagestan, 2011 13.03.2011 · Republic of Dagestan |
| Osmanov Sapiyula Yusupovich b. 23.09.1965 · Registered · Voters’ group | Regional assembly, Republic of Dagestan, 2007 11.03.2007 · Republic of Dagestan |
| Osmanova Zeynab Zeynadinovna b. 20.01.1981 · Registered · A Just Russia | Regional assembly, Republic of Dagestan, 2007 11.03.2007 · Republic of Dagestan |
| Osmolovskiy Aleksey Aleksandrovich b. 30.01.1978 · Registered · New People | By-election · Regional assembly, Kaliningrad Oblast, 2022 20.11.2022 · Kaliningrad Oblast |
| Osmolovskiy Gennadiy Sergeevich b. 20.06.1939 · Registered · CPRF | Regional assembly, Smolensk Oblast, 2002 19.05.2002 · Smolensk Oblast |
| Osmolovskiy Gennadiy Sergeevich b. 20.06.1939 · Registered · "Smolenskoe oblastnoe otdelenie Kommunisticheskoy partii Rossiyskoy Federatsii" | Regional assembly, Smolensk Oblast, 2007 02.12.2007 · Smolensk Oblast |
| Osmolovskiy Gennadiy Sergeevich b. 20.06.1939 · Registered · "Smolenskoe oblastnoe otdelenie Kommunisticheskoy partii Rossiyskoy Federatsii" | Regional assembly, Smolensk Oblast, 2007 02.12.2007 · Smolensk Oblast |
| Osmolovskiy Nikolay Aleksandrovich b. 01.04.1946 · Registered · "Smolenskoe oblastnoe otdelenie Kommunisticheskoy partii Rossiyskoy Federatsii" | Regional assembly, Smolensk Oblast, 2007 02.12.2007 · Smolensk Oblast |
| Osnovin Sergey Aleksandrovich b. 28.04.1958 · Registered · Self-nomination | Regional assembly, Saint Petersburg, 2002 08.12.2002 · Saint Petersburg |
| Osnovskiy Valeriy Aleksandrovich b. 27.10.1963 · Registered · Self-nomination | Regional assembly, Pskov Oblast, 2002 31.03.2002 · Pskov Oblast |
| Osovskoy Andrey Nikolaevich b. 29.04.1980 · Registered · United Russia | Regional assembly, Vologda Oblast, 2007 11.03.2007 · Vologda Oblast |
| Osokin Aleksandr Vyacheslavovich b. 18.12.1952 · Registered · United Russia | Regional assembly, Perm Krai, 2011 04.12.2011 · Perm Krai |
| Osokin Aleksandr Matveevich b. 05.02.1948 · Registered · Self-nomination | Regional assembly, Altai Republic, 2002 19.05.2002 · Altai Republic |
| Osokin Denis Aleksandrovich b. 01.08.1983 · Registered · LDPR | Regional assembly, Moscow Oblast, 2007 11.03.2007 · Moscow Oblast |
| Osokin Mikhail Gennadevich b. 05.07.1971 · Registered · Yabloko | State Duma, 2011 04.12.2011 · Russian Federation |
| Osokin Mikhail Gennadevich b. 05.07.1971 · Registered · Yabloko | State Duma, 2007 02.12.2007 · Russian Federation |
| Osolodchenko Viktoriya Viktorovna b. 27.05.1973 · Registered · Voters’ group | Regional assembly, Lipetsk Oblast, 2006 08.10.2006 · Lipetsk Oblast |
| Osolodchenko Viktoriya Viktorovna b. 27.05.1973 · Registered · Voters’ group | Regional assembly, Lipetsk Oblast, 2006 08.10.2006 · Lipetsk Oblast |
| Ospanov Galikhan Bolatovich b. 31.05.1967 · Registered · United Russia | Regional assembly, Amur Oblast, 2011 04.12.2011 · Amur Oblast |
| Ossa Nadezhda Petrovna b. 16.04.1956 · Registered · United Russia | Regional assembly, Amur Oblast, 2011 04.12.2011 · Amur Oblast |
| Ostaev Georgiy Shalvovich b. 20.10.1963 · Registered · A Just Russia | Regional assembly, Republic of North Ossetia–Alania, 2012 14.10.2012 · Republic of North Ossetia–Alania |
| Ostaev Georgiy Shalvovich b. 20.10.1963 · Registered · A Just Russia | Regional assembly, Republic of North Ossetia–Alania, 2012 14.10.2012 · Republic of North Ossetia–Alania |
| Ostaev Inal Zakharovich b. 01.04.1949 · Registered · Samovydvizhenie | Regional assembly, Republic of North Ossetia–Alania, 2007 02.12.2007 · Republic of North Ossetia–Alania |
| Ostanin Valeriy Anatolevich b. 15.11.1950 · Registered · CPRF | Regional assembly, Perm Krai, 2011 04.12.2011 · Perm Krai |
| Ostanin Valeriy Anatolevich b. 15.11.1950 · Registered · CPRF | Regional assembly, Perm Krai, 2011 04.12.2011 · Perm Krai |
| Ostanin Vasiliy Vladimirovich b. 18.05.1974 · Registered · Self-nomination | Regional assembly, Primorsky Krai, 2006 08.10.2006 · Primorsky Krai |
| Ostanin Viktor Alekseevich b. 01.01.1951 · Registered · Patriots of Russia | State Duma, 2007 02.12.2007 · Russian Federation |
| Ostanin Viktor Alekseevich b. 01.01.1951 · Registered · Zabaykalskoe kraevoe otdelenie Agrarnoy partii Rossii | Regional assembly, Zabaykalsky Krai, 2008 12.10.2008 · Zabaykalsky Krai |
| Ostanin Viktor Alekseevich b. 01.01.1951 · Registered · Self-nomination | State Duma, 2003 07.12.2003 · Russian Federation |
| Ostanin Viktor Alekseevich b. 01.01.1951 · Registered · Zabaykalskoe kraevoe otdelenie Agrarnoy partii Rossii | Regional assembly, Zabaykalsky Krai, 2008 12.10.2008 · Zabaykalsky Krai |
| Ostanin Vyacheslav Afanasevich b. 12.12.1945 · Registered · Self-nomination | Regional assembly, Udmurt Republic, 2003 06.04.2003 · Udmurt Republic |
| Ostanin Dmitriy Dmitrievich b. 06.04.1943 · Registered · Voters’ group | Regional assembly, Sverdlovsk Oblast, 2004 14.03.2004 · Sverdlovsk Oblast |
| Ostanin Yuriy Mikhaylovich b. 30.08.1935 · Registered · CPRF | Regional assembly, Perm Krai, 2011 04.12.2011 · Perm Krai |
| Ostanina Mariya Evgenevna b. 18.03.1984 · Registered · LDPR | Regional assembly, Novosibirsk Oblast, 2010 10.10.2010 · Novosibirsk Oblast |
| Ostanina Mariya Evgenevna b. 18.03.1984 · Registered · LDPR | Regional assembly, Novosibirsk Oblast, 2010 10.10.2010 · Novosibirsk Oblast |
| Ostanina Nadezhda Vladimirovna b. 1976 · Registered · United Russia | Regional assembly, Komi Republic, 2025 14.09.2025 · Komi Republic |
| Ostanina Nina Aleksandrovna b. 26.12.1955 · Registered · "Kemerovskoe oblastnoe otdelenie Kommunisticheskoy partii Rossiyskoy Federatsii" | Regional assembly, Kemerovo Oblast – Kuzbass, 2008 12.10.2008 · Kemerovo Oblast – Kuzbass |
| Ostanina Nina Aleksandrovna b. 26.12.1955 · Registered · CPRF | State Duma, 2011 04.12.2011 · Russian Federation |
| Ostanina Nina Aleksandrovna b. 26.12.1955 · Registered · CPRF | State Duma, 2021 19.09.2021 · Russian Federation |
| Ostanina Nina Aleksandrovna b. 26.12.1955 · Registered · CPRF | By-election · State Duma, 2019 08.09.2019 · Russian Federation |
| Ostanina Nina Aleksandrovna b. 26.12.1955 · Registered · CPRF | State Duma, 2016 18.09.2016 · Russian Federation |
| Ostanina Olga Nikolaevna b. 04.01.1982 · Registered · Regionalnoe otdelenie Politicheskoy partii "Alyans Zelenykh - Narodnaya partiya" v Udmurtskoy Respublike | Regional assembly, Udmurt Republic, 2012 14.10.2012 · Udmurt Republic |
| Ostankov Boris Alekseevich b. 25.10.1951 · Registered · Patriots of Russia | Regional assembly, Sverdlovsk Oblast, 2006 08.10.2006 · Sverdlovsk Oblast |
| Ostankova Natalya Sergeevna b. 10.04.1952 · Registered · Self-nomination | Regional assembly, Kaluga Oblast, 2004 14.11.2004 · Kaluga Oblast |
| Ostankova Olga Viktorovna b. 18.08.1977 · Registered · A Just Russia | State Duma, 2011 04.12.2011 · Russian Federation |
| Ostantsev Ruslan Valerevich b. 08.10.1980 · Registered · LDPR | Regional assembly, Altai Krai, 2011 04.12.2011 · Altai Krai |
| Ostapenko Aleksandr Grigorevich b. 1958 · Registered · A Just Russia | Regional assembly, Belgorod Oblast, 2025 14.09.2025 · Belgorod Oblast |
| Ostapenko Aleksey Vasilevich b. 24.05.1976 · Registered · Right Cause | Regional assembly, Sakhalin Oblast, 2012 14.10.2012 · Sakhalin Oblast |
| Ostapenko Aleksey Vasilevich b. 24.05.1976 · Registered · Right Cause | Regional assembly, Sakhalin Oblast, 2012 14.10.2012 · Sakhalin Oblast |
