| Denis Kostin | |
| Birth Date: | 21 June 1995 |
| Birth Place: | Omsk, Russia |
| Height Ft: | 6 |
| Height In: | 1 |
| Weight Lbs: | 203 |
| Position: | Goaltender |
| Catches: | Left |
| Team: | Sibir Novosibirsk |
| League: | KHL |
| Former Teams: | Avangard Omsk Torpedo Nizhny Novgorod |
| Career Start: | 2013 |
Denis Kostin (Russian: Денис Костин; born June 21, 1995) is a Russian professional ice hockey goaltender. He is currently playing with HC Sibir Novosibirsk of the Kontinental Hockey League (KHL).
Kostin made his Kontinental Hockey League debut playing with Avangard Omsk during the 2013–14 KHL season.