Emilius Ditlev Bærentzen, usually known as Emil Barentzen, (30 October 1799, Copenhagen - 14 February 1868, Copenhagen) was a Danish portrait painter and lithographer, active during the Golden Age of Danish Painting.
Born in Copenhagen on 30 October 1799, Barentzen served an apprenticeship at the pharmacy in Nykobing Sjælland but then travelled to Christiansted on the then Danish island of St. Croix in the West Indies where he worked in one of the government offices. Five years later he returned to Denmark and, after qualifying as a lawyer, moved into painting which until then he had practiced as a hobby. In 1821, he entered the Danish Academy where he studied under Christoffer Wilhelm Eckersberg. He was awarded the little silver medal in 1826 and the large silver medal the following year. He soon became one of Copenhagen's most popular portrait painters. His paintings were characterized by an elegant but sober style, free of psychological trimmings in accordance with contemporary practice. One of his most successful works is the portrait of Soren Kirkegaard's fiancee Regine Olsen (1840).
In 1837, he began to specialize in lithography with H.L. Danschell who managed his deceased father-in-law's oilcloth factory where stones were used to colour the fabric. This led to the founding of a lithographic company, Emilius Bärentzen & Co.s litografiske Institut, which later became Hoffensberg, Jespersen & Fr. Trap. Bærentzen made lithographs of many of the period's most important figures. He continued to work both as a lithographer and artist until 1866 when he painted the portraint of Cosmus Bræstrup for the Freemasons lodge in Helsingor. He died on 14 February 1868.
