Dianalund is a railway town on the west central part of the island of Zealand, Denmark. It has a population of 4,093 (1 January 2024), making it the second largest town in Sorø Municipality.

Dianalund was the municipal seat of the former Dianalund Municipality, until 1 January 2007.

Kolonien Filadelfia, the only epilepsy hospital in Denmark, is located in the town.

Dianalund is served by Dianalund railway station, located on the Tølløse railway line.

• Weather forecast Dianalund, Denmark weather-atlas.com