Boudevilliers 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.

Boudevilliers is first mentioned in 1195 as Boudeviler.

Boudevilliers had an area, as of 2009, of 12.6 square kilometers (4.9 sq mi). Of this area, 7.71 km2 (2.98 sq mi) or 61.3% is used for agricultural purposes, while 4.05 km2 (1.56 sq mi) or 32.2% is forested. Of the rest of the land, 0.79 km2 (0.31 sq mi) or 6.3% is settled (buildings or roads), 0.02 km2 (4.9 acres) or 0.2% is either rivers or lakes and 0.02 km2 (4.9 acres) or 0.2% is unproductive land.