| Orlov Aleksandr Stepanovich b. 29.08.1963 · Elected deputy · A Just Russia | Regional assembly, Altai Krai, 2011 04.12.2011 · Altai Krai |
| Orlov Aleksandr Stepanovich b. 29.08.1963 · Elected deputy · A Just Russia | Regional assembly, Altai Krai, 2008 02.03.2008 · Altai Krai |
| Orlov Aleksey Aleksandrovich b. 10.02.1987 · Elected deputy · LDPR | Regional assembly, Republic of Karelia, 2011 04.12.2011 · Republic of Karelia |
| Orlov Aleksey Maratovich b. 09.10.1961 · Elected · United Russia | Head, Republic of Kalmykia, 2014 14.09.2014 · Republic of Kalmykia |
| Orlov Vasiliy Aleksandrovich b. 14.04.1975 · Elected · United Russia | Governor, Amur Oblast, 2023 10.09.2023 · Amur Oblast |
| Orlov Vasiliy Aleksandrovich b. 14.04.1975 · Elected · United Russia | Early · Governor, Amur Oblast, 2018 09.09.2018 · Amur Oblast |
| Orlov Vladimir Nikolaevich b. 12.08.1970 · Elected deputy · United Russia | Regional assembly, Leningrad Oblast, 2011 04.12.2011 · Leningrad Oblast |
| Orlov Dmitriy Stanislavovich b. 03.07.1973 · Elected deputy · Samovydvizhenie | Regional assembly, Perm Krai, 2011 04.12.2011 · Perm Krai |
| Orlov Dmitriy Stanislavovich b. 03.07.1973 · Elected deputy · Samovydvizhenie | By-election · Regional assembly, Perm Krai, 2010 10.10.2010 · Perm Krai |
| Orlov Igor Anatolevich b. 17.08.1964 · Elected · United Russia | Early · Governor, Arkhangelsk Oblast, 2015 13.09.2015 · Arkhangelsk Oblast |
| Orlov Nikolay Ivanovich b. 05.12.1942 · Elected deputy · Voters’ group | Regional assembly, Rostov Oblast, 2003 30.03.2003 · Rostov Oblast |
| Orlov Nikolay Ivanovich b. 05.12.1942 · Elected deputy · CPRF | Regional assembly, Rostov Oblast, 2008 02.03.2008 · Rostov Oblast |
| Orlov Sergey Aleksandrovich b. 1982 · Elected · United Russia | Regional assembly, Ryazan Oblast, 2025 14.09.2025 · Ryazan Oblast |
| Orlov Sergey Valerevich b. 19.01.1963 · Elected deputy · United Russia | Regional assembly, Kirov Oblast, 2011 13.03.2011 · Kirov Oblast |
| Orlov Stepan Vladimirovich b. 22.10.1971 · Elected deputy · United Russia | Regional assembly, Moscow, 2009 11.10.2009 · Moscow |
| Orlov Stepan Vladimirovich b. 22.10.1971 · Elected deputy · United Russia | Regional assembly, Moscow, 2005 04.12.2005 · Moscow |
| Orlova Galina Yakovlevna b. 26.09.1950 · Elected deputy · United Russia | Regional assembly, Republic of Adygea, 2006 12.03.2006 · Republic of Adygea |
| Orlova Nadezhda Pavlovna b. 16.07.1980 · Elected deputy · United Russia | State Duma, 2007 02.12.2007 · Russian Federation |
| Orlova Svetlana Yurevna b. 23.10.1954 · Elected · United Russia | Governor, Vladimir Oblast, 2013 08.09.2013 · Vladimir Oblast |
| Ortina Olga Alekseevna b. 1987 · Elected · United Russia | Regional assembly, Voronezh Oblast, 2025 14.09.2025 · Voronezh Oblast |
| Orus-Ool Vladimir Soyanovich b. 17.01.1959 · Elected deputy · Voters’ group | Repeat · Regional assembly, Tuva Republic, 2002 23.06.2002 · Tuva Republic |
| Ortskhanov Khazhibikar Alaudinovich b. 17.10.1962 · Elected deputy · LDPR | Regional assembly, Republic of Ingushetia, 2008 02.03.2008 · Republic of Ingushetia |
| Osadchiy Nikolay Ivanovich b. 08.12.1957 · Elected deputy · CPRF | Regional assembly, Krasnodar Krai, 2002 24.11.2002 · Krasnodar Krai |
| Osadchiy Nikolay Ivanovich b. 08.12.1957 · Elected deputy · CPRF | Early · Regional assembly, Krasnodar Krai, 2007 02.12.2007 · Krasnodar Krai |
| Osadchuk Andrey Mikhaylovich b. 30.04.1972 · Elected deputy · United Russia | Regional assembly, Tyumen Oblast, 2011 04.12.2011 · Tyumen Oblast |
| Osanov Vladimir Nikolaevich b. 13.04.1959 · Elected deputy · Self-nomination | Regional assembly, Chuvash Republic, 2002 08.12.2002 · Chuvash Republic |
| Osetrov Vladimir Ivanovich b. 02.01.1951 · Elected deputy · CPRF | Regional assembly, Kirov Oblast, 2011 13.03.2011 · Kirov Oblast |
| Osin Viktor Konstantinovich b. 03.09.1953 · Elected deputy · United Russia | Regional assembly, Novosibirsk Oblast, 2005 11.12.2005 · Novosibirsk Oblast |
| Osin Viktor Konstantinovich b. 03.09.1953 · Elected deputy · Self-nomination | Regional assembly, Novosibirsk Oblast, 2001 02.12.2001 · Novosibirsk Oblast |
| Osin Viktor Konstantinovich b. 03.09.1953 · Elected deputy · United Russia | Regional assembly, Novosibirsk Oblast, 2010 10.10.2010 · Novosibirsk Oblast |
| Osintsev Yuriy Valerevich b. 05.01.1954 · Elected deputy · United Russia | Regional assembly, Sverdlovsk Oblast, 2004 14.03.2004 · Sverdlovsk Oblast |
| Osipov Aleksandr Mikhaylovich b. 28.09.1969 · Elected · Samovydvizhenie | Early · Governor, Zabaykalsky Krai, 2019 08.09.2019 · Zabaykalsky Krai |
| Osipov Aleksandr Mikhaylovich b. 28.09.1969 · Elected · Samovydvizhenie | Governor, Zabaykalsky Krai, 2024 08.09.2024 · Zabaykalsky Krai |
| Osipov Andrey Gennadevich b. 22.04.1964 · Elected deputy · United Russia | Regional assembly, Altai Krai, 2011 04.12.2011 · Altai Krai |
| Osipov Andrey Gennadevich b. 22.04.1964 · Elected deputy · United Russia | Regional assembly, Altai Krai, 2008 02.03.2008 · Altai Krai |
| Osipov Andrey Gennadevich b. 22.04.1964 · Elected deputy · Voters’ group | Regional assembly, Altai Krai, 2004 14.03.2004 · Altai Krai |
| Osipov Vyacheslav Konstantinovich b. 29.08.1937 · Elected deputy · United Russia | State Duma, 2007 02.12.2007 · Russian Federation |
| Osipov Dmitriy Vasilevich b. 29.04.1966 · Elected deputy · United Russia | Regional assembly, Kirov Oblast, 2006 12.03.2006 · Kirov Oblast |
| Osipov Ilya Vladimirovich b. 14.06.1970 · Elected deputy · Samovydvizhenie | Regional assembly, Yaroslavl Oblast, 2008 02.03.2008 · Yaroslavl Oblast |
| Osiptsov Valeriy Nikolaevich b. 31.12.1963 · Elected · LDPR | Regional assembly, Tomsk Oblast, 2011 04.12.2011 · Tomsk Oblast |
| Osiptsov Valeriy Nikolaevich b. 31.12.1963 · Elected deputy · LDPR | Regional assembly, Tomsk Oblast, 2011 04.12.2011 · Tomsk Oblast |
| Osiptsova Galina Nikolaevna b. 20.12.1960 · Elected deputy · Samovydvizhenie | By-election · Regional assembly, Kabardino-Balkarian Republic, 2007 02.12.2007 · Kabardino-Balkarian Republic |
| Ositsyna Olga Sergeevna b. 03.05.1975 · Elected deputy · LDPR | Regional assembly, Arkhangelsk Oblast, 2009 01.03.2009 · Arkhangelsk Oblast |
| Oskanov Abdul-Vagap Martaskovich b. 21.12.1946 · Elected deputy · United Russia | Regional assembly, Republic of Ingushetia, 2011 04.12.2011 · Republic of Ingushetia |
| Oskolkov Andrey Eduardovich b. 04.02.1964 · Elected deputy · Samovydvizhenie | Regional assembly, Udmurt Republic, 2007 02.12.2007 · Udmurt Republic |
| Oskolkov Andrey Eduardovich b. 04.02.1964 · Elected deputy · Self-nomination | Regional assembly, Udmurt Republic, 2003 06.04.2003 · Udmurt Republic |
| Oskolkov Andrey Eduardovich b. 04.02.1964 · Elected deputy · United Russia | Regional assembly, Udmurt Republic, 2012 14.10.2012 · 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 |
| Osmanov Abdurakhman Osmanovich b. 25.02.1950 · Elected deputy · United Russia | Regional assembly, Republic of Dagestan, 2007 11.03.2007 · Republic of Dagestan |
| Osmanov Abdurakhman Osmanovich b. 25.02.1950 · Elected deputy · United Russia | Regional assembly, Republic of Dagestan, 2011 13.03.2011 · Republic of Dagestan |
