Jens Otto Krag (Danish pronunciation: [ˈjens ˈʌtsʰo ˈkʰʁɑˀw]; 15 September 1914 – 22 June 1978) was a Danish politician, who served as the prime minister of Denmark from 1962 to 1968 and again from 1971 to 1972, and as leader of the Social Democrats from 1962 to 1972. He was president of the Nordic Council in 1971.