Dorothy Canning Miller (February 6, 1904 – July 11, 2003) was an American art curator and one of the most influential people in American modern art for more than half of the 20th century. The first professionally trained curator at the Museum of Modern Art (MoMA), she was one of the very few women in her time who held a museum position of such responsibility.
Miller, the daughter of Arthur Barrett Miller and Edith Almena Canning, was born in Hopedale, Massachusetts and grew up in Montclair, New Jersey. After graduating from Smith College in 1925, she trained with John Cotton Dana of the Newark Museum, which was then one of the most creative and ambitious museums in the country, and worked there from 1926 to 1929. From 1930 to 1932, she worked for Mrs. Henry Lang cataloging and researching a collection of Native American art. which was to be donated to the Montclair Art Museum.
The Museum of Modern Art, founded in 1929, did not yet have its own building in the early 1930s and was housed in a series of temporary quarters. Miller first came to director Alfred H. Barr, Jr.'s attention in 1933, when she and Holger Cahill (with whom Miller was living in Greenwich Village — they married in 1938) were curating the First Municipal Art Exhibition in space donated by the Rockefeller family. Some of the participating artists wanted to boycott the show after the Diego Rivera mural Man at the Crossroads was deliberately destroyed during the construction of the Rockefeller Center. Miller asked Barr to intercede in the controversy, which he did.