Hurum is a municipality in Buskerud county, Norway. The administrative centre of the municipality is the village Sætre. The municipality of Hurum was established on 1 January 1838 (see formannskapsdistrikt). The small village of Holmsbu was granted town status in 1847, but it did not become a municipality of its own. It lost its town status on 1 January 1964.

Hurum was once suggested as the location for the new national airport of Norway. The plan was, however, abandoned, due to fears of too much fog in Hurum, and the main airport is now situated at Gardermoen in Akershus. It is famous also because it is the place where Morten Harket, the voice of the Norwegian band a-ha, lives (in Sætre).

The Old Norse form of the name was Húðrimar. The meaning of the first element (Húð) is unknown and the last element is the plural form of rimi which means "ridge".

The coat-of-arms is from modern times. They were granted on 2 February 1979. The arms show two blue wavy lines on a silver background. This was chosen because the municipality is on a peninsula between two fjords: Oslofjord and Drammensfjord. At the same time the arms are based on the arms of the Huitfeldt family, who played a major role in the local history. The family used a single bend as arms.

The municipality borders Røyken to the north. To the west the coastline is located close to the eastern coast of Vestfold with Svelvik. It is connected to the eastern side of the Oslofjord via Oslofjordtunnel, one of the longest undersea tunnels of its kind in Northern Europe. The tunnel is 7.2 kilometres (4.5 mi) long and connects Hurumhalvøya to Akershus county.

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