| Portrait of Count Duke de Olivares | |
| Artist: | Diego Velázquez |
| Year: | 1635 |
| Medium: | Oil on canvas |
| Height Metric: | 67 |
| Width Metric: | 54.5 |
| Metric Unit: | cm |
| Imperial Unit: | in |
| City: | St. Petersburg |
| Museum: | Hermitage Museum |
The Portrait of Count-Duke de Olivares is a painting by Spanish artist Diego Velázquez, finished in 1635. It is housed in the Hermitage Museum of St. Petersburg.
The picture portrays Gaspar de Guzmán, Count-Duke of Olivares, Prime Minister of Spain during the reign of Philip IV. He is portrayed in half bust over a neutral background, the face appearing tired and swollen, markedly aged from the previous, more famous equestrian portrait of Duke de Olivares also by Velázquez. Olivares wears a simple black dress with a white ruff.