Prince Philip Prospero (Spanish: El príncipe Felipe Próspero) is an oil on canvas portrait by Diego Velázquez of Philip Prospero, Prince of Asturias, from 1659.

[1] The painting depicts Philip Prospero, Prince of Asturias (Madrid, November 20 , 1657 - Madrid, November 1, 1661), the short lived heir to the Spanish crown, who died aged only 3 years old.

He was the third son and the first from the marriage of Philip IV of Spain and Mariana of Austria.

In this portrait, the child is standing, he wears a dress typical of toddlers, while he rests his right arm on an armchair, which seems to grant him more compassion than majesty, since his health was precarious as evidenced by the amulets that he carries.

The subject of the painting is located in a room, and in the background there is an open door through which light enters.