Sir Wilfred Thomason Grenfell, KCMG (28 February 1865 – 9 October 1940) was a medical missionary to Newfoundland and Labrador.
Grenfell moved to London in 1882. He then commenced the study of medicine at the London Hospital Medical College (now part of Barts and The London School of Medicine and Dentistry) under the tutelage of Sir Frederick Treves: he graduated in 1888. His immediate family came from Rugby, Warwickshire.
The Royal National Mission to Deep Sea Fishermen sent Grenfell to Newfoundland in 1892 to improve the plight of coastal inhabitants and fishermen.[2] That mission began in earnest in 1893 when he recruited two nurses and two doctors for hospitals at Indian Harbour, Newfoundland and later opened cottage hospitals along the coast of Labrador. The mission expanded greatly from its initial mandate to one of developing schools, an orphanage, cooperatives, industrial work projects, and social work. Although originally founded to serve the local fishermen the mission developed to include the aboriginal peoples and settlers along the coasts of Labrador and the eastern side of the Great Northern Peninsula of northern Newfoundland. For his years of service on behalf of the people of these communities he was later knighted.