Robert Winthrop Chanler (February 22, 1872 – October 24, 1930) was an American artist and member of the Astor and Dudley–Winthrop families. A designer and muralist, Chanler received much of his art training in France at the École des Beaux-Arts, and there his most famous work, titled Giraffes, was completed in 1905 and later purchased by the French government. Robert D. Coe, who studied with him, described Chanler as being "eccentric and almost bizarre." Chanler rose to prominence as an acclaimed American artist when his work was exhibited in the 1913 Armory Show in New York City.