Sigurd Jebsen Grieg (22 August 1894 – 3 November 1973) was a Norwegian museologist and archeologist. He is most associated with the excavation of Raknehaugen, a prehistoric burial barrow located at Ullensaker in Akershus, Norway.
He was born in the borough of Fana in the city of Bergen, Norway. He was the son of Bergen based book publisher, John Grieg (1856–1905).
He earned his Master's Degree (1923) and PhD (1926) from the University of Oslo. He was manager of the Sandvig Collections at Maihaugen in Lillehammer from 1946 to 1964. His later research centered principally on the culture of the Middle Ages.