Grandevent is a municipality in the district of Jura-Nord Vaudois in the canton of Vaud in Switzerland.
Grandevent is first mentioned in the 16th Century as Grandevens.
Grandevent has an area, as of 2009, of 3.45 square kilometers (1.33 sq mi). Of this area, 1.57 km2 (0.61 sq mi) or 45.5% is used for agricultural purposes, while 1.77 km2 (0.68 sq mi) or 51.3% is forested. Of the rest of the land, 0.11 km2 (27 acres) or 3.2% is settled (buildings or roads).
Of the built up area, housing and buildings made up 2.0% and transportation infrastructure made up 1.2%. Out of the forested land, 43.8% of the total land area is heavily forested and 7.5% is covered with orchards or small clusters of trees. Of the agricultural land, 8.7% is used for growing crops and 11.0% is pastures, while 1.4% is used for orchards or vine crops and 24.3% is used for alpine pastures.
The municipality was part of the Grandson District until it was dissolved on 31 August 2006, and Grandevent became part of the new district of Jura-Nord Vaudois.