William Stanley Rubin was an American art scholar. a distinguished curator, critic, collector, art historian and teacher of modern art.
From 1968 to 1988, Rubin was a curator at The Museum of Modern Art located in New York City and, from 1973 to 1988, he served as director of the Painting and Sculpture Department. He played a key role in building the museum's collection of—particularly acquiring work from the period of abstract expressionism—and organized many groundbreaking exhibitions. His younger brother Lawrence Rubin was an art dealer in NYC and in Europe.