Église Saint-Charles de Montigny-en-Ostrevent, Catholic church in Montigny-en-Ostrevent, France.

Église Saint-Charles is a red brick church built in a Latin cross plan, mixing Romanesque Revival forms with Art Deco handling. White stone or white render outlines the base course, the bands, the pointed-arch window surrounds and the corner corbels. The left facade rises to a stepped gable above three arched doorways and three tall pointed-arch windows with blue-tinted glass; a lower wing runs to the right with a row of narrow pointed-arch windows.

Built between 1933 and 1935 by the Aniche Mining Company for the Polish mining community, the church was consecrated to Saint Charles and represents the industrial heritage of northern France's coal mining era.

The church serves the Polish immigrant community with bilingual masses celebrated in French and Polish every Sunday at 9 AM, maintaining linguistic traditions established during the early 20th century mining immigration period.

Located in the Sanatorium district near Lambrecht Castle, the church holds regular services on Sundays and Fridays, belonging to the Saint-Vincent-de-Paul-en-Ostrevent parish within the Cambrai diocese.

The church lacks its originally planned bell tower due to concerns about ground stability from underground mining activities, making it one of the few churches designed without this traditional element for geological reasons.