| Viktor Valentényi | |
| Birth Date: | 1977 10, df=yes |
| Birth Place: | Békéscsaba, Hungary |
| Position: | Defender |
| Youthclubs1: | Békéscsabai Előre FC |
| Years1: | 1997– |
| Clubs1: | Békéscsabai Előre FC |
| Caps1: | 35 |
| Goals1: | 1 |
| Nationalyears1: | 1998–1999 |
| Nationalteam1: | Hungary U-21 |
| Nationalcaps1: | 1 |
| Nationalgoals1: | 0 |
| Pcupdate: | 31 May 2003 |
Viktor Valentényi (born 14 October 1977) is a Hungarian footballer who plays for Békéscsabai Előre FC as defender.