Ole Mørk Sandvik (9 May 1875 – 5 August 1976) was a Norwegian educator, musicologist and folk-song collector.
He was a son of school inspector Paul Knutsen Barstad Sandvik (1847–1936) and his wife Nikoline Petrine Mørk (1847–1927).
He also worked part-time as a singing teacher at the University of Oslo and the MF Norwegian School of Theology, from 1916.
[3] In Norway Sandvik founded the Norwegian Folk Music Research Association in 1948,[4] and chaired the organization from 1948 to 1965.
In 1966 he was awarded honorary membership in the Norwegian National Association for Traditional Music and Dance.