Bellenglise (French pronunciation: [bɛlɑ̃ɡliz]) is a commune in the department of Aisne in Hauts-de-France in northern France.

On the 28 August 1914 the French 10th Regiment of Territorial Infantry opposed a German invading force.

The French unit was essentially from the local Département, with its depot in St Quentin.

Despite a fierce defence, the French line gave and a battalion (1000 men) of the unit was taken prisoner.

The famous picture of the British 137th Brigade, gathered on the canal bank at Riqueval Bridge, for a pep talk after the crossing of the St. Quentin Canal, was taken nearby.