Annie Traquair Lang (September 8, 1885 – November 8, 1918) was an American Impressionist painter, known for experimental impasto brushstrokes and jewel-tone abstracted forms. She exhibited portraits, still lifes and landscapes at two dozen venues in Europe and the U.S., and institutions including the Metropolitan Museum of Art acquired her works. She was acclaimed in publications including the New York Times and The International Studio. She also earned praise for her collection of paintings by her mentor, William Merritt Chase, with whom she traveled in Europe and California. She was considered the Chase pupil "who best assimilated his technique and verve."