Modalen is a municipality in the
Nordhordland district in the northern part of
Hordaland county in
Norway. The
administrative centre of the municipality is the village of
Mo. The other main village in the municipality is Øvre Helland. Modalen is very sparsely populated, in fact, only the municipality of
Utsira has less inhabitants. Most of the residents of Modalen live in the main Modalen valley which extends eastwards from the end of the
Romarheimsfjorden.