Hirson (French pronunciation: [iʁsɔ̃]; Picard: Urchon) is a commune in the Aisne department in Hauts-de-France in northern France.

The culmination of Hirson is located 268 meters above sea level.

Hirson is bordered by eight municipalities: Éparcy, Buire, Neuve-Maison, Mondrepuis, Anor (Nord), Momignies (Belgium), Saint-Michel, Bucilly.

[3] As of the early 20th century, there was a permanent fort and two artillery batteries near the railway junction.

Also at that time, the town was engaged in the manufacture of glass bottles, tiles and iron and tin goods, as well as wool-spinning and brewing.