Nordby is an urban Settlement in Samsø Municipality, in the region of Central Denmark, Denmark. Nordby lies at 11 m above sea level. It has 204 inhabitants (2026). The nearest city is Aarhus, 30 km to the northwest. Among the landmarks around are Stenstuen (9.7 km), Tunø Church (7.0 km) and Nils Halses Høj (9.5 km). Among the natural features are Ballebjerg (1.8 km).