Montreuil (French pronunciation: [mɔ̃tʁœj] ⓘ) is a commune in the Eure-et-Loir department in northern France.

After the liberation of the area by Allied Forces in 1944, engineers of the Ninth Air Force IX Engineering Command began construction of a combat Advanced Landing Ground outside of the town.

Declared operational on 4 September, the airfield was designated as "A-38", it was used by the 363d Tactical Reconnaissance Group which flew photo-recon aircraft from the airfield until early October when the unit moved into Central France.

Afterward, the airfield was closed.

This Eure-et-Loir geographical article is a stub.