Lurnfeld is a market town in the district of Spittal an der Drau in the Austrian state of Carinthia. The municipality consists of the two Katastralgemeinden Möllbrücke and Pusarnitz. It is located in the Drava valley on the southern slope of the Ankogel Group of the Hohe Tauern range, west of the district's capital Spittal an der Drau. At Möllbrücke is the confluence of the Drava with the Möll river. In the west are the mountains of the Kreuzeck Group.
The Lurnfeld valley around the Roman city of Teurnia is a very old settlement area, in ancient times called vallis Lurna. In a 891 deed mentioned as Liburnia, it became the centre of the Carinthian counts of the Lurngau, who resided at Hohenburg Castle.
While Pusarnitz already appeared in a 1072 deed, the main village Möllbrücke was first mentioned as mölnprukke in 1253. In 1307 it was denoted as a possession of the Meinhardiner Counts of Görz and seat of a county court. In 1460 Count John of Görz had to sign the Treaty of Pusarnitz at Feldsberg Castle, whereby he lost all his Carinthian possessions to the Habsburg Emperor Frederick III.