Lejre Municipality (Danish: Lejre Kommune) is a kommune in the Region Zealand of Denmark.

28 September 2016 Carsten Rasmussen took over as mayor from Mette Touborg, who was leaving for a new job.

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.