Per Krohg was born in
Åsgårdstrand, Norway, the son of painters
Christian Krohg and
Oda Krohg. The family lived in
Paris, where Per Krohg grew up. He showed early artistic talent, and studied first with his father (from 1903 to 1907), then with
Henri Matisse at
Académie Matisse (from 1909 to 1910). Krohg's work as an artist covered a wide field, from drawing on paper, illustrations, and posters to set design, sculpture, and monumental paintings. After returning to Norway in 1930 he taught at the
National College of Art and Design in Oslo. During
World War II, he was a forced labourer at
Veidal Prison Camp. In 1946 he was appointed professor at the National Art Academy, and served as its director from 1955 to 1958. Among others, his students included
Frithjof Tidemand-Johannessen and
Tulla Blomberg Ranslet.{{cite web|url= https://nkl.snl.no/Per_Lasson_Krohg|title=Per Lasson Krohg |website= Norsk Kunstner leksikon in New York City|alt=Mural at the United Nations Security Council Chamber in New York City Krohg created the murals for the
United Nations Security Council Chamber, located in the
United Nations building in New York City. He adorned many other public buildings with large
frescoes, including
Oslo City Hall, the Physics and Chemistry Buildings at the
University of Oslo and the
National Library, Oslo.{{cite web|url= https://digitaltmuseum.no/011085443564/nasjonalbiblioteket-i-imponerende-nordisk-nybarokk|title=Nasjonalbiblioteket i imponerende, nordisk nybarokk |website= DigitaltMuseum In 1950 he received the
King's Medal of Merit in gold, and 1955 he was appointed Commander of the
Order of St. Olav. From 1936 he was a member of the
Swedish Royal Academy of Fine Arts in
Stockholm and in 1948 he was awarded the Swedish
Prince Eugen Medal. ==Personal life==