Audnedal is a former municipality in the old Vest-Agder county, Norway. It was located in the traditional district of Sørlandet. The administrative centre of the municipality was the village of Konsmo. Other villages in Audnedal include Byremo and Vivlemo. The municipality existed from 1964 until its dissolution in 2020 when Audnedal was merged into the neighboring municipality of Lyngdal in what is now Agder county.

Vest-Agder was one of 18 counties (fylker) in Norway up until 1 January 2020, when it was merged with Aust-Agder to form Agder county. In 2016, there were 182,701 inhabitants, around 3.5% of the total population of Norway. Its area was about 7,277 square kilometres (2,810 sq mi). The county administration was located in its largest city, Kristiansand.