Utterslev Mose (English: Utterslev Boglands) is a large semi-natural area of lakes, reed beds and parkland located on the border between Copenhagen and Gladsaxe municipalities, approximately six kilometers northwest of central Copenhagen, Denmark.

It is known for its rich bird life and has a dense network of walking and cycling trails.

Utterslev Mose was originally one big, shallow-watered lake which formed at the end of the last ice age and later developed into bogland.

Lakes were dug out, canals established and a number of reed islands created to provide nesting grounds for wild birds.

A circuit of the three lakes Vestmosen, Midtmosen and Østmosen as well as Højmosen in the northeastern corner is about nine kilometres long.