Varntresk or Varntresken[2] is a village in Hattfjelldal Municipality in Nordland county, Norway.
The village is located on the eastern shore of the large lake Røsvatnet.
The lake Famvatnet lies about 8 kilometres (5.0 mi) east of the village.
Varntresk Church is located in this village, and it serves the northern part of the municipality.
The village of Hattfjelldal, the municipal centre, lies about 30 kilometres (19 mi) to the south.