Lejre Municipality (Danish: Lejre Kommune) is a kommune in the Region Zealand of Denmark.
The current municipality was established on 1 January 2007 as a result of Kommunalreformen ("The Municipal Reform" of 2007), merging the former Lejre Municipality with Bramsnæs Municipality and Hvalsø Municipality to form a new Lejre Municipality. 28 September 2016 Carsten Rasmussen took over as mayor from Mette Touborg, who was leaving for a new job. She had been the mayor since 1 January 2010. She was the only one from the left wing Socialist People's Party to hold the highest political position in a municipality, whereas he is from the Social Democrats.
Local companies include the chocolate manufacturer Friis-Holm.
The municipality consists of the following settlements (populations as of 2011):
and
Lejre's municipal council consists of 25 members, elected every four years. Below are the municipal councils elected since the Municipal Reform of 2007.
