Øsby is an urban Settlement in Haderslev Municipality, in the region of Southern Denmark, Denmark. Øsby lies at 25 m above sea level. It has 446 inhabitants (2026). The nearest city is Haderslev, 10.2 km to the west. Beaches nearby: Flovt (4.1 km), Hejsager (6.9 km), Knud (7.7 km). Among the landmarks around are Haderslev Cathedral (10.2 km), Skamlingsbanken (19.4 km) and Koldinghus (29 km). Among the natural features are Knivsbjerg (18.4 km).