Eivind Reiersen (11 June 1877 – 16 September 1947) was a Norwegian newspaper editor and politician for the Labour and Communist parties.

He served one term as an MP, was deputy mayor of Skien Municipality, and edited the newspapers Fremover, Ny Dag, Bratsberg-Demokraten (a.k.a.

He was born at Ringsevju in Nes in Sauherad Municipality as a son of crofters Reier Eivindsen (1853–1933) and Gunhild Olsdatter (1853–1900).

[1] He joined the Labour Party in 1899,[2] and was a member of Solum municipal council from 1907 to 1913, serving since 1910 as deputy mayor.

[4] After editing Folkets Dagblad for some time, Reiersen went on to the new, more radical newspaper Telemark Arbeiderblad in the same year.

[5] Reiersen was later elected to the Parliament of Norway in 1921 from the constituency Market towns of Telemark and Aust-Agder counties.

In 1940 he served as editor of Rjukan Arbeiderblad for nine months before the newspaper was shut down during the occupation of Norway by Nazi Germany.