Gullhaug is a village in Holmestrand Municipality in Vestfold county, Norway. The village is located about 3 kilometres (1.9 mi) to the northwest of the town of Holmestrand and about 7 kilometres (4.3 mi) to the southeast of the village of Sundbyfoss. The European route E18 highway passes by the village about 2 kilometres (1.2 mi) to the west. The village is mainly a residential area.

The 1.38-square-kilometre (340-acre) village has a population (2024) of 2,604 and a population density of 1,882 inhabitants per square kilometre (4,870/sq mi).