Saint-Omer (French pronunciation: [sɛ̃.t‿ɔmɛʁ] ⓘ) is a commune in the Calvados department in the Normandy region in northwestern France.

[3] The commune is made up of the following collection of villages and hamlets, Le Mesnil, L'Abbaye du Val, Le Moncel, La Fortinière, Les Hautes Planches, Courteil and Saint-Omer.

[5] The two streams of La Vallee des Vaux and The Orival are the only watercourses running through the commune.

Les Rochers de La Houle is the remains of an ancient mountain range, the Armorican Massif that was gradually eroded by the sea, the remaining 240 metre high fragment is a popular destination for tourists.

[6][7] Mégalithe du Pré-du-Vivret is a Neolithic Megalith that was classed as a Monument historique in 1954[8][9]