Morten Pedersen Porsild (1 September 1872, Glibstrup near Store Andst – 30 April 1956, Copenhagen) was a Danish botanist who lived and worked most of his adult life in Greenland. He participated in expeditions to Greenland in 1898 and 1902, together with the physiologist August Krogh. In 1906, he founded the Arctic Station in Qeqertarsuaq, West Greenland, since 1956 part of the University of Copenhagen. He got support from famous polar researchers like Knud Rasmussen, Mylius-Erichsen and Fridtjof Nansen. A private person donated the building and running cost were put directly on the Danish state budget. Morten Porsild managed the station for forty years. He received the Hans Egede Medal in 1921.[1] In 1946, he returned to Copenhagen, and was succeeded as station head by Paul Gelting. He was the father of Alf Erling Porsild, Robert Thorbjørn Porsild, Asta Irmelin "Tulle" Egede and Ove Sten Porsild.
Apart from botany, Porsild contributed to zoology and ethnography. He also entered Greenland politics.