Count Carl Gustaf Ericsson von Rosen (19 August 1909 – 13 July 1977) was a Swedish pioneer aviator, humanitarian, and mercenary pilot. He flew relief missions in a number of conflicts as well as combat missions for Finland (whose first military aircraft his father had donated in 1918) and Biafra. His flights for the Biafran Air Force were notable for using the small Malmö MFI-9 in a ground attack role.
Von Rosen was born in Helgesta, Flen Municipality, Södermanland, Sweden and grew up in Rockelstad Castle. He was the son of the explorer Count Eric von Rosen (1879–1948), co-founder of National Socialist Bloc, and baroness Mary Fock (1886–1967). He was nephew of Carin Göring, wife of Hermann Göring. Throughout his upbringing, Carl Gustaf appeared to have had serious differences in opinion with his family, with one author referring to him as the "black sheep of his family." His brother, Björn (1905–1989), was a writer, graphic artist and painter, and his sister, Birgitta Wolf (1913–2009), was a writer and human rights activist. From an early age, Carl Gustaf was interested in mechanics; his subsequent fascination with flying machines was likely influenced by his uncle, who was a fighter ace during World War I (and later head of the German Luftwaffe).
He was a student at Lundsbergs boarding school from 1920 to 1926 and at AB Aeromateriel's flight school in 1929 and took the pilot's license test in the same year. Von Rosen took the airline pilot exam in 1934. Von Rosen himself started his flying career as a mechanic before becoming an aerobatic stunt pilot in a travelling circus.
When the Italians under Benito Mussolini attacked the independent empire of Ethiopia, von Rosen joined the Swedish Red Cross ambulance mission. He also repeatedly flew casualties out from the battlefield under extremely dangerous conditions. This activity resulted in him receiving mustard gas burns due to the use of the gas by the Italian Air Force.
After his return from the war in Ethiopia, he went to the Netherlands to join KLM, the first public airline in the world, and became one of their foremost pilots.