Communauté d'agglomération des Deux Baies en Montreuillois

The communauté de communes du Montreuillois was created on July 12, 1999, and was located in the Pas-de-Calais département, in northern France. It was created in January 2002. It was merged into the new Communauté d'agglomération des Deux Baies en Montreuillois in January 2017. The Communauté de communes comprised the following communes:

Montreuil-sur-Mer (French pronunciation: [mɔ̃tʁœj syʁ mɛʁ] ; Picard: Montreu-su-Mér or Montreul-su-Mér; Dutch: Monsterole), Montreuil-on-the-Sea, is a subprefecture in the Pas-de-Calais Department in northern France. It was known as Montreuil until 31 December 2022. It is located on the Canche river, not far from Étaples. The sea, however, is now some distance away. Montreuil-sur-Mer station has rail connections to Arras and Étaples.

The canton of Montreuil is a former canton in the Pas-de-Calais department and the Nord-Pas de Calais region. It was disbanded following the French canton reorganisation that came into effect in March 2015. It had a total of 22,203 inhabitants (2012).

Montreuil-sur-Mer is a railway station on the line from Arras to Étaples via Saint-Pol-sur-Ternoise. It is located in the commune of Montreuil-sur-Mer in the Pas-de-Calais department, France. The station is served by TER Hauts-de-France trains between Étaples-Le Touquet and Arras via Saint-Pol-sur-Ternoise.

Écuires (French pronunciation: [ekɥiʁ]; West Flemish: Schuren) is a commune in the Pas-de-Calais department in the Hauts-de-France region of France.

La Madelaine-sous-Montreuil (French pronunciation: [la madlɛn su mɔ̃tʁœj], literally La Madelaine under Montreuil; Picard: El Madelaine-dsou-Montreu) is a commune in the Pas-de-Calais department in the Hauts-de-France region of France.

The arrondissement of Montreuil is an arrondissement of France in the Pas-de-Calais department in the Hauts-de-France region. It has 164 communes. Its population is 112,118 (2016), and its area is 1,327.1 km2 (512.4 sq mi).

Neuville-sous-Montreuil (French pronunciation: [nøvil su mɔ̃tʁœj], literally Neuville under Montreuil) is a commune in the Pas-de-Calais department in the Hauts-de-France region of France.

Campigneulles-les-Petites (French pronunciation: [kɑ̃piɲœl le pətit]) is a commune in the Pas-de-Calais department in the Hauts-de-France region of France.

Attin (French pronunciation: [atɛ̃]) is a commune in the Pas-de-Calais department in northern France.

The Chartreuse Notre-Dame des Prés was a Carthusian monastery (Charterhouse) in northern France, at Neuville-sous-Montreuil, in the Diocese of Arras, now Pas-de-Calais. The charter of foundation is dated from the chateau d'Hardelot on 15 July 1324; the church was consecrated in 1338.

La Calotterie (French pronunciation: [la kalɔtʁi]) is a commune in the Pas-de-Calais department in the Hauts-de-France region of France.