| Sergei Breyev | |
| Fullname: | Sergei Gennadyevich Breyev |
| Birth Date: | 22 April 1987 |
| Birth Place: | Brezhnev, Russian SFSR |
| Height: | 1.77 m[1] |
| Position: | Midfielder |
| Years1: | 2004–2008 |
| Clubs1: | FC Rotor Volgograd |
| Caps1: | 16 |
| Goals1: | 0 |
| Years2: | 2007 |
| Clubs2: | → FC Tekstilshchik Kamyshin (loan) |
| Caps2: | 24 |
| Goals2: | 2 |
| Years3: | 2008 |
| Clubs3: | FC Alnas Almetyevsk |
| Caps3: | 8 |
| Goals3: | 0 |
| Years4: | 2009 |
| Clubs4: | FC Irtysh Omsk |
| Caps4: | 25 |
| Goals4: | 1 |
| Years5: | 2010–2012 |
| Caps5: | 61 |
| Goals5: | 4 |
| Years6: | 2012–2013 |
| Clubs6: | FC Khimki |
| Caps6: | 26 |
| Goals6: | 1 |
| Years7: | 2013–2019 |
| Clubs7: | FC Orenburg |
| Caps7: | 137 |
| Goals7: | 8 |
| Years8: | 2019–2020 |
| Clubs8: | FC Avangard Kursk |
| Caps8: | 18 |
| Goals8: | 0 |
| Years9: | 2020–2022 |
| Clubs9: | FC Orenburg |
| Caps9: | 44 |
| Goals9: | 4 |
Sergei Gennadyevich Breyev (Russian: Серге́й Геннадьевич Бреев; born 22 April 1987) is a Russian former professional football player. He played as a defensive midfielder.
He made his Russian Premier League debut for FC Orenburg on 16 October 2016 in a game against FC Tom Tomsk.