| Roles | Competed in Olympic Games |
|---|---|
| Sex | Male |
| Full name | Valentin Yuri oğlu•Demyanenko |
| Used name | Valentin•Demyanenko |
| Nick/petnames | Dimyan |
| Other names | Valentin Yuryevich Demyanenko, Валентин Юрьевич Демьяненко |
| Born | 23 October 1983 in Cherkasy, Cherkasy (UKR) |
| Measurements | 193 cm / 93 kg |
| NOC | Azerbaijan |
| Medals | OG |
| Gold | 0 |
| Silver | 1 |
| Bronze | 0 |
| Total | 1 |
Valentin Demyanenko had the following podium finishes at the Flatwater World Championships: 1st 2005 C1 200 m, 1st 2009 C1 200 m, 1st 2011 C1 200 m, 1st 2013 C1 200 m, 2nd 2006 C1 200 m, 2nd 2011 C1 4×200 m (Serhiy Bezuhliy, Maksym Prokopenko and the non-Olympian Andrey Kraytor). Demyanenko represented Ukraine up to 2008 and competed for Azerbaijan from 2009 onwords.
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 2012 Summer Olympics | Canoe Sprint (Canoeing) | AZE |
Valentin Demyanenko | |||
| Canadian Singles, 200 metres, Men (Olympic) | 24 | |||||
| 2016 Summer Olympics | Canoe Sprint (Canoeing) | AZE |
Valentin Demyanenko | |||
| Canadian Singles, 200 metres, Men (Olympic) | 2 | Silver |