Reuilly-Sauvigny (French pronunciation: [ʁœji soviɲi]) is a commune in the Aisne department in Hauts-de-France in northern France.

About 10 kilometres to the east of the commune is Château-Thierry, which is located on a hillside in Marne.

Two surrounding fords meant it was easiest to cross la Marne at the top of the commune, making it a strategic point during the two World wars, during which Reuilly was very heavily damaged.

The Reuilly-Sauvigny coat of arms is emblazoned with: Green with a golden sword, three lioncubs stitched on a silver waving fabric

This Château-Thierry arrondissement geographical article is a stub.