Anizy-le-Château (French pronunciation: [anizi lə ʃato]) is a former commune in the department of Aisne in the Hauts-de-France region of northern France.

The town urbane area covers some 15% of the commune with the rest being farmland and a large forest in the south-west.

[3] The Ailette flows along the southern border of the commune to the west and parallel to the Canal de l'Oise à l'Aisne.

The Fosse du Marais forms part of the eastern border of the commune and also flows into the Ailette.

The County was created in 1397 by Charles VI in favour of Jean de Roucy, the Bishop of Laon.