Boris Solotareff (October 23, 1889 – July 1966) was a Russian painter.
He was active in Munich, Switzerland, and France, but spent the majority of his career in New York where he became a naturalized American citizen in 1949.
Solotareff made use of a variety of styles; according to the Benezit Dictionary of Artists, his "work was in the mainstream of Eastern European Expressionism, with influences of Art Deco from the time when he lived in Paris." Solotareff's paintings have been exhibited widely, including the "Cinquantenaire Du Symbolisme" exhibition at the Bibliothèque Nationale (1936), the Vendome Galleries (New York, 1938), and the "Exhibition of oils and water colors" at the Charles Barzansky Galleries from October 1–20, 1940.