| Tatjana Owsijenko | Pop Estrada | 23 |
| Oscar Feltsman | Sowjetisches Lied EstradaSoundtrackPopRockKlassikRomanzeChristmas | 136 |
| Surganova & Orchestra | RockBalladeBlues / Bluesrock | 7 |
| Irina Ortman | Pop | 6 |
| Olga Losina | Pop | 1 |
| Olga Orlova | Pop | 6 |
| Georg Ots | EstradaSowjetisches Lied | 10 |
| Organicheskaya Ledi | Elektronische MusikPop | 3 |
| Zhenya Otradnaya | PopRomanze | 4 |
| Ocheretyanyy kit | PopFolk | 4 |
| Olenka | Pop | 3 |
| Simon Osiashvili | Estrada | 1 |
