The Land of Heusden and Altena (Dutch: Land van Heusden en Altena) is a region located in the Dutch province of North-Brabant. In 1904 it consisted of the historical regions Land of Altena and Land of Heusden (only the part above the Bergse Maas).
The Land of Heusden and Altena lies on a river island in the estuary of the rivers Rhine and Meuse. It is enclosed by the rivers Boven Merwede (north), Afgedamde Maas (east) and Oude Maasje/Bergse Maas (south) and by the region of De Biesbosch (west).
It contains the municipalities of Werkendam (the largest town of the island), Woudrichem (the historical centre of the island) and Aalburg (the region of Aalburg was part of the Land of Heusden).
Unlike most parts of North Brabant the Land of Heusden and Altena has a strong Protestant (Calvinist) character. Former Prime Minister Hendrikus Colijn (1869–1944) had his roots in this region.
Coordinates: 51°46′18″N 4°57′37″E / 51.771667°N 4.960278°E