Northeast (Icelandic: Norðaustur) is one of the six multi-member constituencies of the Althing, the national legislature of Iceland. The constituency was established as Northeastern (Icelandic: Norðurland eystra) in 1959 following the nationwide extension of proportional representation for elections to the Althing. It was renamed Northeast in 2003 when most of the Eastern constituency was merged into the Northeastern constituency following the re-organisation of constituencies across Iceland. Northeast consists of the regions of Eastern and Northeastern. The constituency currently elects nine of the 63 members of the Althing using the open party-list proportional representation electoral system. At the 2021 parliamentary election it had 29,847 registered electors.

Northeast currently elects nine of the 63 members of the Althing using the open party-list proportional representation electoral system.^[4][5] Constituency seats are allocated using the D'Hondt method.^[6][7] Compensatory seats (equalisation seas) are calculated based on the national vote and are allocated using the D'Hondt method at the constituency level.^[8][9] Only parties that reach the 5% national threshold compete for compensatory seats.^[7][10]