Sint-Niklaas is a Belgian city and municipality located in the Flemish province of East Flanders. The municipality comprises the city of Sint-Niklaas proper and the towns of Belsele, Nieuwkerken-Waas, and Sinaai.

The Flemish Region, usually simply referred to as Flanders, is one of the three regions of Belgium—alongside the Walloon Region and the Brussels-Capital Region. Covering the northern portion of the country, the Flemish Region is primarily Dutch-speaking. With an area of 13,522 km2 (5,221 sq mi), it accounts for only 45% of Belgium's territory, but 57% of its population. It is one of the most densely populated regions of Europe with around 490/km2 (1,300/sq mi).