Melville Jacobs (July 3, 1902 – July 31, 1971) was an American anthropologist known for his extensive fieldwork on cultures of the Pacific Northwest. He was born in New York City. After studying with Franz Boas he became a member of the faculty of the University of Washington in 1928 and remained until his death in 1971. Especially during the earlier part of his career, from 1928 until 1936, he collected large amounts of linguistic data and text from a wide range of languages including Sahaptin, Molale, Kalapuya, Clackamas, Tillamook, Alsea, Upper Umpqua, Galice and Chinook Jargon.
He left funds to establish the Jacobs Research Fund, which supports anthropological research in the Pacific Northwest. His papers, including extensive raw linguistic material that has provided the basis for subsequent research on now extinct languages, are held by the University of Washington in the Jacobs Archive.
He was married to Elizabeth Jacobs, also an anthropologist.