Treaty of Copenhagen

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
 * United Nations Climate Change Conference 2009, a conference which may result in a global treaty