Aagtdorp is a hamlet in the Dutch province of North Holland. It is a part of the municipality of Bergen, and lies about 6 km northwest of Alkmaar.

The hamlet was first mentioned between 1215 and 1226 as Ekthorp, and could mean "settlement in the corner/border". Aagtdorp was home to 111 people in 1840. From the 1950s onwards, camp sites were established in Aagtdorp and it