Lillerød is a Danish town, seat of the Allerød Municipality, in the Region Hovedstaden. Its population 1 January 2023 was of 16,836.

Allerød Kommune is a municipality on the island of Zealand (Sjælland) in eastern Denmark. The municipality covers an area of 67 km2, and has a population of 26,061. Its mayor is Karsten Längerich of the political party Venstre.