Holum is a former municipality that was located in the old Vest-Agder county in Norway. The 116-square-kilometre (45 sq mi) municipality existed from 1838 until its dissolution in 1964. The administrative centre was the village of Krossen where Holum Church is located. The municipality was located in the present-day municipality of Lindesnes 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.