Klaus Berntsen, Danish politician, Prime Minister of Denmark (b. 1844)
Klaus Berntsen (12 June 1844 – 27 March 1927) was a Danish politician, representing the Liberal party, Venstre. He was Council President of Denmark from 5 July 1910 to 21 June 1913 as the leader of the Cabinet of Klaus Berntsen. From 5 May 1920 to 9 October 1922 he served as Defence Minister.