Sem is a village in Steinkjer Municipality, in Trøndelag, Norway. Sem lies at 40 m above sea level, 3.1 km from the Geitfjellet mountains. The nearest city is Trondheim, 94 km to the southwest. Among the landmarks around are Bølareinen (18.8 km), Egge Church (10.3 km) and Steinkjer Church (10.8 km). Among the natural features are Offenåsen (12.6 km).