Beauvoir-de-Marc (French pronunciation: [bovwaʁ də maʁk]) is a commune in the northern part of the Isère department.

Beauvoir-de-Marc is located in the northern part of the Isère department on the Bourgoin-Jallieu axis - Vienne, at an equal distance of 20 km between each of these two Dauphiné urban areas.

Located in the western region of the Terres froides, covered by glacial formations, the subsoil of Beauvoir-de-Marc is primarily composed of emergent molasses growing on slope sides.

The land, covered in hummocks and punctuated by Gervonde valley, contains a small brook running through its foothills.

Beauvoir-de-Marc is a land of soft, rolling hills accompanied by wooded countryside, unaffected by deforestation, unlike the steep slopes of the Combes.