Over three years, from 2013 to 2016, samples from timbers from the archaeological excavation at Gammel Strand in Copenhagen have been analysed dendrochronologically. The excavations were carried out by Københavns Museum in connection with Metro Cityring project, with Stuart Whatley as the excavation leader. The dendrochronological analysis was carried out to enable the precise dating of the felling of the trees used in a series of large quayside constructions and to determine the region where these trees had grown. This analysis thus has provided details of the chronology of the many constructions that were established over several centuries at the site and has allowed insight into the changes in trade of timber to Copenhagen through the post-Medieval period, both in terms of timber type (genus) and source region.