Marcel Duchamp is a French artist and pioneer of modern art. He revolutionized art by introducing the concept of the readymade, everyday objects that become works of art through their simple selection and presentation. His most famous work, “Fountain” (1917), a signed urinal, shocked the world by challenging traditional notions of beauty and artistic value. 

A member of the Dada movement, he influenced artists like Andy Warhol and Jeff Koons, showing that art lies not only in form but also in idea and context. Duchamp remains a central figure in contemporary art.