Ariamsvlei is a settlement of about 500 people in the ǁKaras Region of southern Namibia and a border post between Namibia and South Africa, located 110 km east of Karasburg on the national B3 road. It lies at 804 m above sea level. The border post with South Africa lies 1.2 km to the east of the settlement; however, the actual border (at the 20th meridian east) lies 15.3 km further east along the B3, near the South African settlement of Nakop. South Africa's border post (also named Nakop) is located a further 1.3 km away. Ariamsvlei is an important rest stop for long-distance trucks, and a railway stop on the line between Windhoek and Upington. It belongs to the Karasburg electoral constituency. The settlement has a petrol station, a shop, and a restaurant.