Terres de Druance (French pronunciation: [tɛʁ də dʁyɑ̃s]) is a commune in the department of Calvados, northwestern France.

The municipality was established on 1 January 2017 by merger of the former communes of Lassy (the seat), Saint-Jean-le-Blanc and Saint-Vigor-des-Mézerets.

[4] The commune is made up of the following collection of villages and hamlets, Saint-Jean-le-Blanc, La Moissonnière, Gournay, Terres de Druance and Saint-Vigor-des-Mézerets.

[6] The River Druance and four streams, The Pres Carreaux, The Parcs, The Vaux plus the Cresme are the five watercourses flowing through the commune.

[7][8][9][10] Eglise Saint-Vigor de Saint-Vigor-des-Mézerets is a fifteenth century Church that was classed as a Monument historique in 1928.