Treaty of Copenhagen may refer to: Treaty of Copenhagen (1441), a peace treaty ending the Dutch–Hanseatic War Treaty of Copenhagen (1468), by which Margaret of Denmark, was betrothed to James III of Scotland Treaty of Copenhagen (1660), a peace treaty in the Second Northern War Treaty of Copenhagen (1670), a treaty of commerce and alliance between Denmark-Norway and Great Britain Treaty of Copenhagen (1709), an alliance in the Great Northern War Copenhagen Convention of 1857 governing transit passage through the Danish Straits, whereby a group of shipping nations bought out the Sound Dues in the Øresund Copenhagen Accord, a document adopted at United Nations Climate Change Conference 2009
See also Copenhagen Convention (disambiguation)