Nicolai Niels Nielsen (3 March 1777 – 10 July 1854) was a Norwegian priest and politician.
He was born in the village Balbro on Funen, Denmark.
He took his Cand.theol.
in Copenhagen in 1804, and initially worked as a teacher in Zealand.
In 1807 he moved to Norway, becoming a priest in Vardøe in Finnmark.
In 1810 he relocated to Holmedal in Sunnfjord.He was a member of the Norwegian Constitutional Assembly at Eidsvoll in 1814.
Together with Lars Johannes Irgens and Peder Hjermann, he was a representative of Nordre Bergenhuus (now Sogn og Fjordane).
He primarily supported the position of the Independence Party (Selvstendighetspartiet) Nielsen was appointed priest in Eid in Nordfjord during 1821, and dean at the Indre Sogn deanery in Borgund in Sogn og Fjordane from 1835.
While stationed in Eid, he was elected to the Norwegian Parliament in 1830, representing the constituency of Nordre Bergenhus Amt (now Sogn og Fjordane).