Nils Christian Irgens (10 October 1811 – 25 April 1878) was a Norwegian military officer and politician.
He was born in Sogndal as the son of Lars Johannes Irgens, founding father of the Norwegian Constitution. Nils Christian Irgens became a military officer in 1830, and advanced in the ranks, becoming colonel in 1861. In 1863 he became major general. He held this post until 1868.[1] He chaired Centralforeningen for Udbredelse af Legemsøvelser og Vaabenbrug from 1864 to 1867.[2]
On 3 April 1868 Irgens was appointed Minister of Defence. He held this post until 1 February 1872, when he was appointed a member of the Council of State Division in Stockholm. On 27 May 1872[3] he left due to the statsrådssak.[1]
Irgens was a member of the Swedish Academy from 1865, and was a member of the board of Hovedbanen.[1]