Erik Adolf von Willebrand

Erik Adolf von Willebrand (/ˌfʌnˈvɪlᵻbrɑːnt/) (born 1 February 1870 in Vaasa – died 12 December 1949 in Pernaja) was an internist from Finland.

The son of a district engineer in Vaasa, Willebrand qualified as a physician at the University of Helsinki. He took his first degree in 1896, then completed his doctoral thesis on the changes occurring in blood after significant blood loss. For the remainder of his professional career, the properties of blood and its coagulation continued to be the focus of his interest.