Illange (French pronunciation: [ilɑ̃ʒ]; German: Illingen; Lorraine Franconian: Illéng/Illéngen) is a commune in the Moselle department in Grand Est in north-eastern France.

It adjoins Thionville.

The Fort d'Illange, a pre-World War I German fortification, is located just to the north of the town, and is operated as an open-air museum.

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