Rumigny (French pronunciation: [ʁymiɲi]) is a commune in the Ardennes department in the Grand Est region in northern France.

It lies near Rozoy-sur-Serre, 12 km (7.5 mi) from Mon Idée on the border with Belgium, at the junction of routes D877 and D977.

Rumigny was the birthplace of the astronomer Nicolas Louis de Lacaille.

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