Doullens is a commune in the Somme department, Hauts-de-France, France.

Somme is a department of France, located in the north of the country and named after the Somme river. It is part of the Hauts-de-France region. It is bordered by Pas-de-Calais and Nord to the north, Aisne to the east, Oise to the south and Seine-Maritime to the southwest. To the northwest, its coastline faces the English Channel and it shares maritime borders with Kent and East Sussex in the United Kingdom. It had a population of 570,559 in 2019.