| Birth Place: | Kazan, Russian |
| Height: | 1.7m (05.6feet) |
| Weight: | 75kg (165lb) |
| Sport: | Shooting |
| Club: | Sport Association of Qatar |
| Coach: | Nurmyrat Hanov |
| Show-Medals: | yes |
Oleg Engachev (Russian: Олег Енгачев; born 1967) is a Russian-born shooter who competes for Qatar.
In 2014 he won the 25 m center fire pistol event at the Asian Games.
Engachev is married, and has two children.