Arnitlund is a village in Haderslev Municipality, in the region of Southern Denmark, Denmark. Arnitlund lies at 50 m above sea level. The nearest city is Haderslev, 11.5 km to the east. Among the landmarks around are Haderslev Cathedral (11.5 km), Immervad Bridge (4.7 km) and Kunstmuseet Brundlund Slot (18.4 km). Among the natural features are Knivsbjerg (10.0 km).