Hem is a village in Larvik Municipality in Vestfold county, Norway. The village is located in the far eastern part of the municipality, along the border with Sandefjord Municipality. The village is located about 5 kilometres (3.1 mi) to the east of the village of Tjøllingvollen and about 5 kilometres (3.1 mi) north of the coastal village of Ula. The town of Sandefjord lies about 6 kilometres (3.7 mi) to the north of Hem.

The 0.35-square-kilometre (86-acre) village has a population (2022) of 676 and a population density of 1,905 inhabitants per square kilometre (4,930/sq mi).

Historically, Hem was a part of Tjølling municipality until 1988 when it became part of Larvik Municipality.