Lille Mølle (English: Little Mill) is a historic house museum in the Christianshavn neighbourhood of Copenhagen, Denmark.

[citation needed] In 1916, Little Mill was acquired by Ejnar Flach-Bundegaard, a young engineer, who turned it into the private home of himself and his wife as well as a small factory, DIAF - Dansk Instrument og apparatfabrik (English: Danish Instrument and Device Factory).

The factory was located in the steam mill and a warehouse that has now been demolished on the other side of Christianshavn Voldgade.

Shortly before her death, she donated Little Mill to the Danish National Museum, and today everything stands exactly as it did when the couple were alive.

[citation needed] Despite not being a typical home, Little Mill is in some ways characteristic of its period, being furnished in a national romantic yet uniquely personal style.