| Team: | Free Agent |
| Former Teams: | Neftekhimik Nizhnekamsk |
| Height Ft: | 6 |
| Height In: | 3 |
| Weight Lb: | 185 |
| Shoots: | Left |
| Birth Date: | 1990 3, mf=yes |
| Birth Place: | Salekhard, Russian SFSR |
| Career Start: | 2009 |
Ion-Georgy Kostev (born March 24, 1990) is a Russian professional ice hockey defenceman who is currently an unrestricted free agent. He most notably played for HC Neftekhimik Nizhnekamsk of the Kontinental Hockey League (KHL).[1]
On October 16, 2018, Kostev was given a two-year ban for a doping violation.[2]