Hans Jacob Neumann Ustvedt (4 July 1903 – 26 January 1982) was a Norwegian medical doctor and broadcasting administrator. He was a driving force of the doctors' resistance during World War II, had to flee to Sweden in 1942, and was leading the medical office at the . He was a professor of internal medicine at the University of Oslo from 1951 to 1962, and Director-General of the Norwegian Broadcasting Corporation (NRK) from 1962 to 1972.
Ustvedt was born in Kristiania. His parents were dr.med. Nils Yngvar Ustvedt and Hanna Mohn. His maternal grandfather was Jakob Mohn. Ustvedt was married to Ingrid With from 1927 to 1947, and to psychologist Liv Dahl from 1947. He was the father of writer and radio personality Yngvar Ustvedt, born 1928.
Ustvedt was cand.med. in 1927, and then assistant physician in Tromsø, Trondheim and Oslo. From 1934 he worked as a physician at Ullevål Hospital and from 1938 at Rikshospitalet, and at the same time working towards a doctorate degree. He was interested in music, being a pianist and singer himself, and his doctorate, published in 1937, was on musicality of patients with brain damages.
During the occupation of Norway by Nazi Germany between 1940 and 1945 Ustvedt was one of the driving forces of the Norwegian phycisians' organized resistance, as he had been elected chairman of the organization Yngre Legers Forening in 1940. He was also involved in building up the so-called Coordination Committee (KK), an organ to coordinate the professional organisations' fight against Nazi influence and takeover. He cooperated closely with Ferdinand Schjelderup, and initiated the formation of KK's cultural group. He had to flee to Sweden in 1942, and was leading the medical office at the .