Mislinja is a settlement in northern Slovenia. It lies in the valley of the Mislinja River. The area was part of the traditional region of Carinthia. It is now also included in the Carinthia statistical region.
There are two churches in the settlement, both belonging to the Parish of Šentilj pod Turjakom. One is dedicated to Saint Leonard and was built in the mid-17th century on the site of an earlier church, first mentioned in written documents dating to 1476. The second is dedicated to Saint Agathius. It was built in the 14th century and is preserved more or less in its original from.