(population: 18,813) is a town in the eastern Netherlands
, in the province of Gelderland
. The municipality covers an area of 83.38 km²
(of which 0.28 km² water).
The municipality of Aalten also includes the following towns, villages and townships: Barlo, Bredevoort, Dale, Haart, Heurne, IJzerlo, 't Klooster, Lintelo.