Dacia (Scandinavia)

Dacia, a toponym historically associated with the Dacian Kingdom, largely in and around modern-day Romania, was for several centuries during the Middle Ages used to refer to Denmark in various documents and scholarly works. This misidentification arose from a combination of vague geographical knowledge, misinterpretations of ancient ethnonyms, and deliberate invention of origin stories. The name Dacia was first applied to Denmark by the 11th-century Norman historian Dudo of Saint-Quentin, who used false etymologies to relate the Danes (Dani), Dacians (Daci) and ancient Greeks (Danai) to each other in order to forge a prestigious origin legend for the Norman dukes. The term Dacia was adopted by other writers and subsequently also used by the papal administration and the Danish monarchy.

When the mendicant orders arrived in Scandinavia in the early 13th century, they chose Dacia as the name for their provinces. The Dominicans were the first to arrive in 1220, followed by the Franciscans in 1232. These provinces also encompassed Sweden and Norway, as well as parts of the Eastern Baltic. Consequently, the term Dacia could be used in narrow sense, referring to the Kingdom of Denmark, or in broad sense, referring to all three Scandinavian kingdoms. In medieval universities, the suffix de Dacia or the adjective Dacus was used to identify students and scholars from Denmark or Scandinavia.

Following the Protestant Reformation in the 16th century, the mendicant orders were dissolved in Scandinavia, and the name Dacia gradually fell out of use.