Bygland is a municipality in Agder county, Norway. It is located in the traditional district of Setesdal. The administrative centre of the municipality is the village of Bygland. Other villages in the municipality include Åraksbø, Austad, Byglandsfjord, Grendi, Langeid, Lauvdal, Litveit, Longerak, Moi, Ose, Sandnes, Skåmedal, and Tveit. The Norwegian National Road 9 runs through the municipality, following the river Otra where most of the population of Bygland lives.

Setesdal is a valley and a traditional district in Agder County in southern Norway. It consists of the municipalities of Bykle, Valle, Bygland, Iveland, and Evje og Hornnes.