| Oleg Nechayev | |
| Fullname: | Oleg Mikhailovich Nechayev |
| Birth Date: | 25 June 1971 |
| Birth Place: | Konstantinovka, Russian SFSR |
| Currentclub: | FC Rotor Volgograd (assistant coach) |
| Position: | Forward/Midfielder |
| Years1: | 1988–1993 |
| Clubs1: | FC Rubin Kazan |
| Caps1: | 155 |
| Goals1: | 27 |
| Years2: | 1993–1995 |
| Caps2: | 62 |
| Goals2: | 9 |
| Years3: | 1996–1998 |
| Caps3: | 115 |
| Goals3: | 51 |
| Years4: | 1999–2000 |
| Clubs4: | FC Rubin Kazan |
| Caps4: | 64 |
| Goals4: | 17 |
| Years5: | 2001–2002 |
| Clubs5: | FC Amkar Perm |
| Caps5: | 37 |
| Goals5: | 8 |
| Years6: | 2002–2004 |
| Clubs6: | FC Rubin Kazan |
| Caps6: | 40 |
| Goals6: | 5 |
| Years7: | 2004 |
| Caps7: | 11 |
| Goals7: | 1 |
| Manageryears1: | 2005 |
| Managerclubs1: | FC Rubin-2 Kazan (assistant) |
| Manageryears2: | 2005–2007 |
| Managerclubs2: | FC Rubin-2 Kazan |
| Manageryears3: | 2008 |
| Managerclubs3: | FC Alnas Almetyevsk (assistant) |
| Manageryears4: | 2014 |
| Managerclubs4: | FC Rubin Kazan (reserves assistant) |
| Manageryears5: | 2014–2015 |
| Managerclubs5: | FC Rubin Kazan (reserves) |
| Manageryears6: | 2015 |
| Managerclubs6: | FC Rubin Kazan (reserves assistant) |
| Manageryears7: | 2015–2016 |
| Managerclubs7: | FC Aktobe (assistant) |
| Manageryears8: | 2017–2021 |
| Managerclubs8: | FC Neftekhimik Nizhnekamsk (assistant) |
| Manageryears9: | 2021–2022 |
| Managerclubs9: | FC Kuban Krasnodar (assistant) |
| Manageryears10: | 2022–2023 |
| Managerclubs10: | FC Kuban Krasnodar (caretaker) |
| Manageryears11: | 2023 |
| Managerclubs11: | FC Rubin Kazan (assistant) |
| Manageryears12: | 2024 |
| Managerclubs12: | FC Kuban Krasnodar (assistant) |
| Manageryears13: | 2024– |
| Managerclubs13: | FC Rotor Volgograd (assistant) |
Oleg Mikhailovich Nechayev (Russian: Олег Михайлович Нечаев; born 25 June 1971) is a Russian professional football coach and a former player. He is an assistant manager with FC Rotor Volgograd.
He made his professional debut in the Soviet Second League in 1988 for FC Rubin Kazan. He played 2 games in the UEFA Cup 1994–95 for FC Rotor Volgograd.