Håskog is the forest that lies high - meaning extracted from the old word háskógr.
The name Håskog can, according to the linguist Olaf Rygh, originate from the adjective hàr that means high up. The farm in itself is not situated very high up, but there are altitudes both in the south and in the north. O. Rygh suggests that the old name was Háskògr. Old spellings: Haaschoug - 1668 and 1723.
Place names for the farm: Diblemyr, Einerholet, Haskogheia, Langa tjødna, Runda tjødna, Vardeheia, Vatlandsdalen, Øygarden.
Håskog is situated between the three lakes Botnavannet, Kolfat-tjodn og Svartevannet close to Berrefjord. The farm has been, as far as we know, only a farm, but the name Øygarden can indicate that there was a settlement in the periphery of that place. It was probably the farmer that is mentioned in the cencus from 1801 that lived there.