Henry Wellington Tate (c. 1860 – 1914) was a Canadian oral historian from the Tsimshian First Nation, best known for his work with the anthropologist Franz Boas.
He was probably the son of Arthur Wellington Clah, an hereditary chief and prominent early Christian convert who had taught the Tsimshian language to the Anglican lay missionary William Duncan in the 1850s.
In 1903 Boas wrote to Clah, on the recommendation of his Tlingit-Kwakwaka'wakw informant George Hunt, expressing an interest in finding someone with whom to work on a description of Tsimshian culture.
In the 1930s, Tate's widow, now known as "Mrs. Sam Bennett," of the Gits'iis tribe, served as a key informant to the anthropologist Viola Garfield during her fieldwork in Lax Kw'alaams.
Aspersions were cast on the reliability or thoroughness of Tate's work by a 1917 review of Tsimshian Mythology written by Marius Barbeau, who had by then done much more extensive, face-to-face fieldwork in Lax Kw'alaams with Clah's grandson, William Beynon.