Albert Samuel Gatschet (October 3, 1832, Beatenberg, Canton of Bern – March 16, 1907) was a Swiss-American ethnologist who trained as a linguist in the universities of Bern and Berlin. He later moved to the United States and settled there in order to study Native American languages, in which field he was a pioneer. In 1877 he became an ethnologist with the US Geological Survey. In 1879 he became a member of the Bureau of American Ethnology, which was part of the Smithsonian Institution. In 1884, he was elected as a member to the American Philosophical Society.