Châlons Cathedral (Cathédrale Saint-Étienne de Châlons) is a Roman Catholic cathedral in Châlons-en-Champagne, France, formerly Châlons-sur-Marne.
It is the seat of the Bishops of Châlons and was consecrated in 1147 October 26, by Blessed Pope Eugene III.
The cathedral is also noted for its stained glass windows.
- october to april : every saturdays and sundays, 10AM to 3PM, - may, june and september : 10 to 12AM and 2 to 6PM, every saturdays and sundays afternoons. - july and august : 10 to 12AM and 2 to 6PM, every days excepting mondays. (Visits are not permitted during offices.)