The Municipality of the District of Lunenburg, is a district municipality in Lunenburg County, Nova Scotia, Canada. Statistics Canada classifies the district municipality as a municipal district.
Lunenburg surrounds the towns of Bridgewater, Lunenburg, and Mahone Bay, which are incorporated separately and not part of the district municipality.
In the 2021 Census of Population conducted by Statistics Canada, the Municipality of the District of Lunenburg had a population of living in of its total private dwellings, a change of from its 2016 population of . With a land area of , it had a population density of in 2021.