John Daniel Lyng (; 22 August 1905 – 18 January 1978) was a Norwegian politician from the Conservative Party. He was the prime minister of Norway from 28 August to 25 September 1963 in a coalition government consisting of the Conservative, Centre, Christian Democratic, and Liberal parties. It was the first government in 28 years that was not headed by the Labour Party.
Early life
Lyng was born in Trondheim to merchant Markus Hartman Lyng (1872–1938) and Martha Maria Helberg (1885–1959), and graduated with the cand.jur. degree in 1927. Before and after World War II he worked as a lawyer and a judge.
He joined the Norwegian resistance movement during the occupation of Norway by Nazi Germany. He raised the mountain cabin Skardøla in Sylene, about 50 metres from the Norway-Sweden border, which was used as an outpost by resistance fighters such as Odd Sørli, Johnny Pevik, and Nils Uhlin Hansen. Lyng later fled the country, and worked in the Norwegian legation in Stockholm's law office from 1943 to 1944, and in the Norwegian government administration-in-exile in London until 1945.