Wormhout (French pronunciation: [wɔʁmut]; before 1975: Wormhoudt; West Flemish: Wormout) is a commune in the Nord department in northern France. Several people in Wormhout still speak West Flemish, a local dialect of Dutch and the traditional language of the region, while French-speakers form a majority, due to centuries of French political and cultural influence.

The town's name is of Germanic origin, meaning "Wormwood."

Neighbouring towns and villages :

• Ledringhem to the south-west, separated by river Peene Becque
• Esquelbecq

Historical population

Year	Pop.	±% p.a.
1968	3,004	—
1975	4,332	+5.37%
1982	5,133	+2.45%
1990	5,057	−0.19%
1999	4,984	−0.16%
2007	5,223	+0.59%
2012	5,388	+0.62%
2017	5,632	+0.89%
Source: INSEE

The arms of Wormhout are blazoned : Or, a lion sable armed and langued gules. ('Flanders' and the communes of Thourotte, Crépy-en-Valois, Bollezeele, Feignies, Flines-lez-Raches and Wormhout use the same arms.)

• Old wind mill
• Jeanne Devos museum
• Wormhoudt Communal Cemetery

Wormhout has a number of school providing education structures for all of the pupils around the town : école du bocage, école Roger Salengro, école Saint-Joseph, collège du Houtland, école Jean Moulin, collège Notre-Dame, lycée de l'Yser.

Wormhout is twinned with the resort town of Llandudno, Conwy, Wales.

• Wormhoudt massacre
• Communes of the Nord department