De Buyer (pronounced Dee Bou yeh) is a French cookware manufacturer, founded in 1830, from the village Le Val-d'Ajol in the Vosges department.
The Arthur de Buyer Coal Mine or coal mine #11 was one of the major Ronchamp coal mines, which is in the area of the city Magny-Danigon in the French region of Franche-Comté.