Rosina Emmet Sherwood (1854–1948) was an American painter. Born in New York City, she was the daughter of William J. and Julia Pierson Emmet; her surviving siblings were Robert Temple Emmet (1854–1936), her twin; William LeRoy Emmet (1858–1941); Devereux Emmet (1861–1934); Richard Stockton Emmet (b.1863); Lydia Field Emmet (1866–1952); Jane Emmet de Glehn (1873–1961); Christopher Temple Emmet (1868–1957); and Thomas Addis Emmet (b.1870). Her first cousin was the painter Ellen Emmet Rand. A drawing by Sherwood is currently in the collection of the Smithsonian American Art Museum.