Nivelles Abbey
| French: Abbaye de Nivelles | |
| View of the Collegiate Church of St. Gertrude | |
| Monastery information | |
|---|---|
| Order | Benedictine nuns; Canonesses Regular | 
| Established | 640 | 
| Disestablished | 1794 | 
| Dedicated to | Saint Gertrude | 
| Diocese | Liège | 
| People | |
| Founder(s) | Itta of Metz | 
| Important associated figures | Saint Gertrude, Saint Amandus, Saint Foillan | 
| Architecture | |
| Status | Destroyed | 
| Functional status | Heritage Site | 
| Completion date | 1049 (abbey church) | 
| Site | |
| Coordinates | 50°35′51″N 4°19′24″E / 50.59750°N 4.32333°E | 
Nivelles Abbey (French: Abbaye de Nivelles) is a former Imperial Abbey of the Holy Roman Empire founded in 640. It is located in Nivelles, Walloon Brabant, Belgium.