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.

From 1924 to 1946, he was administrative manager of the university's Antiquities Collection (Universitetets Oldsaksamling) now the Museum of Cultural History, Oslo.

Grieg conducted an extensive investigation of Raknehaugen at Ullensaker beginning in summer 1939.

Grieg retired at the age limit in 1964, but continued for a few more years as a museum assistant at the university's Antiquities Collection.