Horatio Emmons Hale (May 3, 1817 – December 28, 1896) was an American-Canadian ethnologist, philologist and businessman. He is known for his study of languages as a key for classifying ancient peoples and being able to trace their migrations. Hale was the first to analyze and confirm that the Tutelo language of some Virginia Native Americans belonged to the Siouan family, which was most associated with the western Dakota and Hidatsa languages.