Tveit is a former municipality that was located in the old Vest-Agder county in Norway. The 107-square-kilometre (41 sq mi) municipality existed from 1838 until its dissolution in 1965. The municipality was located in the eastern part of the present-day municipality of Kristiansand along the river Topdalselva. The administrative centre of the municipality was the village of Tveit where Tveit Church is located.