The Portrait of Philip IV or Philip IV in Brown and Silver is a portrait of Philip IV of Spain painted by Diego Velázquez. It is sometimes known as Silver Philip and is now in the National Gallery in London. It was the main portrait of Philip painted by Velázquez in the 1630s, used as the model for many workshop versions.

Philip IV, also called the Planet King, was King of Spain from 1621 to his death and King of Portugal from 1621 to 1640. Philip is remembered for his patronage of the arts, including such artists as Diego Velázquez, and his rule over Spain during the Thirty Years' War.