Hortense Tanenbaum Ferne (1885–1976) was a painter, etcher, and lithographer in New York City and Philadelphia.
Ferne was the daughter of Moses Tanenbaum, an art collector. She married Herman Fernberger in 1906 and in 1940 changed her name legally to Ferne. Her works are included in the permanent collections of the Smithsonian American Art Museum, Nelson-Atkins Museum of Art, and the Philadelphia Museum of Art.