Sint-Gillis-Waas (Dutch pronunciation: [sɪnt ˌxɪlɪs ˈʋaːs];[a] French: Saint-Gilles-Waes) is a municipality located in the Belgian province of East Flanders.

The municipality comprises the towns of De Klinge, Meerdonk [nl], Sint-Gillis-Waas proper and Sint-Pauwels [nl].

On 1 January 2018, Sint-Gillis-Waas had a total population of 19,273.

The total area is 54.98 km2 which gives a population density of 357 inhabitants per km2.

This East Flanders location article is a stub.