The Equestrian Portrait of Prince Balthasar Charles is a portrait of Balthasar Charles, Prince of Asturias on horseback, painted in 1634–35 by Diego Velázquez. It is now in the Prado. Velázquez was commissioned to paint a series of equestrian portraits for the Hall of Realms, originally a wing of the Buen Retiro Palace in Madrid. This work was meant to fill the gap between two larger equestrian portraits of the prince's parents, Philip IV and Elisabeth of France. The Wallace Collection also has an equestrian portrait of the prince. This is attributed to the studio of Velázquez.