The Province of Grünlun, Septentria is one of Septentria's five Provinces. The capital of the division is Ottomar, which is the sixth largest city in Septentria. The Province is the largest in Septentria but has the 2nd lowest population overall, located in the North-Western area of Septentria. It shares a land border with three other provinces; Spärlun, Golfküste and Nord-Golf.
The province has around 9.7% of the total population of Septentria, with 84.4% located in Ottomar. The total population of the division at the 2013 census was 2,411,966.