The Fountainhead is a 1949 American black-and-white drama film produced by Henry Blanke, directed by King Vidor, and starring Gary Cooper, Patricia Neal, Raymond Massey, Robert Douglas and Kent Smith. The film is based on the bestselling 1943 novel of the same name by Ayn Rand, who also wrote the adaptation. Although Rand's screenplay was used with minimal alterations, she later criticized the editing, production design and acting.

The story follows the life of Howard Roark, an individualistic architect who chooses to struggle in obscurity rather than compromise his artistic and personal vision. Roark fights to design modern architecture despite resistance from the traditionally minded architectural establishment. Roark's complex relationships with the individuals who assist or hinder his progress allow the film to be both a romantic drama and a philosophical work. Roark represents Rand's embodiment of the human spirit, and his struggle represents the struggle between individualism and collectivism.

The film opened to negative reviews and was panned by critics.