Carta marina et descriptio septentrionalium terrarum is the first map of the Nordic countries to give details and place names, created by Swedish ecclesiastic Olaus Magnus and initially published in 1539.
The map was created in Rome during 1527–39 by Olaus Magnus.
To construct the map, Magnus drew from a variety of ancient sources including Ptolemy's map in Geographia, and contemporary sources such as the work of Astronomer Jacob Ziegler. In addition to cartographic sources, Magnus also relied on the descriptions of sailors and his own observations.
The map was in production for 12 years, the first copies were printed in 1539 in Venice.