Saint-Waast is a commune in the Nord department in northern France.

[3] Vair, 3 pales gules.

(Englefontaine, Louvignies-Quesnoy, Poix-du-Nord and Saint-Waast-la-Vallée use the same arms.)

The Carrière des Nerviens Regional Nature Reserve is partially located in the communal territory just 1,700 metres (5,600 ft) south-east of the town centre.

This Nord geographical article is a stub.