Slave Market with the Disappearing Bust of Voltaire is an oil painting by Spanish Surrealist artist Salvador Dalí, from 1940.

The painting depicts a slave market, while a woman at a booth watches the people.

A variety of people, dressed in a 17th century fashion, seem to make up the face of Voltaire, while the face seems to be positioned on an object to form a bust of Voltaire.

Voltaire was a French rationalist writer and philosopher known for his opposition to slavery.

In the painting, two women dressed in 17-century costumes form the face of Jean-Antoine Houdon's bust of Voltaire.