| Nicolas Dewalque | |
| Birth Date: | 1945 9, df=yes |
| Birth Place: | Zichen-Zussen-Bolder, Belgium |
| Height: | 1.83 m |
| Position: | Defender |
| Years1: | 1963–1976 |
| Clubs1: | Standard Liège |
| Years2: | 1976–1979 |
| Clubs2: | RFC Liège |
| Nationalyears1: | 1967-1973 |
| Nationalteam1: | Belgium |
Nicolas "Nico" Dewalque (born 20 September 1945) is a Belgian former footballer who played as a defender for R. Standard de Liège and R.F.C. de Liège. He earned 33 caps for the Belgium national team, and participated in the 1970 FIFA World Cup.