Buskerud (Urban East Norwegian pronunciation: [ˈbʉ̂skərʉː] ⓘ) is a county and a current electoral district in Norway, bordering Akershus, Oslo, Innlandet, Vestland, Telemark and Vestfold.

The region extends from the Oslofjord and Drammensfjorden in the southeast to Hardangervidda mountain range in the northwest.

[2] Buskerud was merged with Akershus and Østfold into the newly created Viken County on 1 January 2020.

[4] Due to this, Buskerud (except the area forming the defunct municipalities of Røyken and Hurum) was re-established in 2024.

The county was named after the old manor Buskerud (Old Norse: Biskupsruð) (Biskopsrøysa) located on the west side of the Drammen River in Åmot, Modum municipality.

These were Hallingdal, Numedal, Ringerike, Lower Buskerud, which was originally part of Vestfold, and Western Vingulmark.

[17] Today, agriculture, lumber, wood-pulp mills and other related industries are the county's main economic activities; ample hydroelectric power is produced by the rivers Begna (Begnaelva) and Rands (Randselva) .