Camera Lucida is a short book published in 1980 by the French literary critic Roland Barthes. It is simultaneously an inquiry into the nature and essence of photography, and an epitaph to Barthes's late mother. The book investigates the effects of photography on the spectator (as distinct from the photographer, and also from the object photographed, which Barthes calls the "spectrum"). In a deeply personal discussion of the lasting emotional effect of certain photographs on him, Barthes considers photography as asymbolic, irreducible to the codes of language or culture, and acting on the body as much as the mind. The book develops the twin concepts of studium and punctum: studium denotes the cultural, linguistic, and political interpretation of a photograph, while the punctum of a photograph is its wounding, personally touching detail which establishes a direct relationship with the object or person within it.

Camera Lucida, along with Susan Sontag's work, is one of the most important texts in the criticism and theory of photography.

Barthes died unexpectedly soon after the publication of Camera Lucida, and many have read the book as Barthes's own epitaph for himself.