Fontainemelon is a former municipality in the district of Val-de-Ruz in the Canton of Neuchâtel in Switzerland .

The municipalities of Boudevilliers , Cernier , Chézard-Saint-Martin , Coffrane, Dombresson , Engollon , Fenin-Vilars-Saules , Fontainemelon, Fontaines, Les Geneveys-sur-Coffrane , Les Hauts-Geneveys , Montmollin , Le Pâquier, Savagnier and Villiers merged on 1 January 2013 into the new municipality of Val-de-Ruz.

Fontainemelon is first mentioned about 1350 as Fontainnemelom. In 1358 it was mentioned as Fontannamillon.

Fontainemelon had an area, as of 2009, of 2.5 square kilometers (0.97 sq mi). Of this area, 0.99 km2 (0.38 sq mi) or 40.4% is used for agricultural purposes, while 0.98 km2 (0.38 sq mi) or 40.0% is forested.