Lyngby-Taarbæk Municipality is a municipality in the Capital Region of Denmark near Copenhagen on the eastern coast of the island of Zealand. It is part of the Greater Copenhagen area. The municipality borders Rudersdal Municipality to the north, Furesø Municipality to the west and Gladsaxe and Gentofte Municipality to the south. It borders the Øresund to the east.

The urban area of Copenhagen, lying mostly in the Capital Region of Denmark but also in Region Zealand, consist of Copenhagen and Frederiksberg municipalities and the former Copenhagen County. In all, it consists of 18 municipalities, and except parts of Ballerup, Greve, Ishøj, former Søllerød and former Værløse, mentioned with their population included from 2007. Ishøj and Greve Strand are included for the first time since 1999. As of 1 January 2022, this area had a population of 1,336,982. Statistics Denmark states that the definition of the urban area is based on UN's 200m definition.