| Grebbe line | |
|---|---|
| Netherlands | |
 Grebbe line near Scherpenzeel | |
| Type | Defensive line |
| Site information | |
| Controlled by | Netherlands |
| Site history | |
| Built | 1745–1940 |
| In use | 1745–1951 |
| Materials | Flooded plains, sluices, earth walls, brick, concrete, steel |
| Battles/wars | Battle of the Grebbeberg |
The Grebbe Line (Dutch: Grebbelinie) was a forward defence line of the Dutch Water Line, based on inundation. The Grebbe Line ran from the Grebbeberg in Rhenen northwards until the IJsselmeer.