Loon op Zand is a municipality in the Dutch province of North Brabant, consisting of the towns of Kaatsheuvel, Loon op Zand and De Moer. The town hall is located in Kaatsheuvel because this town has the largest population. The municipality of Loon op Zand is known for the De Loonse en Drunense Duinen National Park, the Efteling theme park and the Mandemakers kitchen boulevard, among other things.