Roosdaal is a municipality located in the Belgian province of Flemish Brabant. The municipality comprises the towns of Borchtlombeek, Onze-Lieve-Vrouw-Lombeek, Pamel and Strijtem. It borders to four other municipalities:
On January 1, 2010, Roosdaal had a total population of 11,163. The total area is 21.69 km² which gives a population density of 495 inhabitants per km². Roosdaal is well known in Flanders for its berries through its annual strawberry convention.
In 2008, during a national television competition, Onze-lieve-vrouw-Lombeek was elected as "The most beautiful village in Flemish-Brabant", but it lost the overall Flemish competition to the town of Oud-Rekem.