Thorstein is a village in Larvik Municipality, in Vestfold, Norway. Thorstein lies at 92 m above sea level. The nearest city is Larvik, 6.0 km to the east. Beaches nearby: Lydhusstranda (5.7 km), Stretrestranda (5.7 km), Langholtstranda (6 km). Among the landmarks around are Kaupang (10.1 km), Gokstad Mound (22 km) and Grenland Bridge (15.0 km). Among the natural features are Mølen tumuli (8.9 km).