Carl Tancred Borenius (July 14, 1885, Vyborg – September 2, 1948, Coombe Bisset) was a Finnish art historian working in England, who became the first professor of the history of art at University College London.
He was a prolific author and recognised as one of the world's leading experts on Italian art of the early Renaissance.
Borenius also served as a diplomat liaising between Finland and Britain.
It has been argued that during World War II Borenius worked as a spy for the British government and was instrumental in enticing Rudolf Hess to fly to Britain in 1941.