| Fullname: | Denis Petrovich Sinyayev |
| Birth Date: | 13 October 1984 |
| Birth Place: | Kursk, Russian SFSR, Soviet Union |
| Height: | 1.78 m |
| Position: | Midfielder |
| Youthclubs1: | Kurskrezinotekhnika Kursk |
| Years1: | 2003–2022 |
| Caps1: | 477 |
| Goals1: | 52 |
Denis Petrovich Sinyayev (Russian: Денис Петрович Синяев; born 13 October 1984) is a Russian former professional football player.
He made his Russian Football National League debut for FC Avangard Kursk on 19 April 2005 in a game against FC Dynamo Makhachkala.