Brolæggerstræde 11 is a Neoclassical property in the Old Town of Copenhagen, Denmark. Jacob Jacobsen Dampe, a political activist campaigning for a free constitution, was arrested in the building on 16 November 1820 for conspiring against the king. The newspaper Socialdemokraten was published from the building from 1889 to 1901. A plaque next to the gate commemorates that the Danish Confederation of Trade Unions (Danish: De Samvirkende Fagforbund) was based at the site from its foundation in 1898 until 1901. The building was listed on the Danish registry of protected buildings and places in 1950.