List of Famous people who born in 1903

Tahar Sfar was a Tunisian lawyer and politician.

Paul Horgan was an American author of fiction and non-fiction, most of which was set in the Southwestern United States. He was the recipient of two Pulitzer Prizes for History. The New York Times Review of Books said of him, in 1989: "With the exception of Wallace Stegner, no living American has so distinguished himself in both fiction and history."

Hervey Milton Cleckley was an American psychiatrist and pioneer in the field of psychopathy. His book, The Mask of Sanity, originally published in 1941 and revised in new editions until the 1980s, provided the most influential clinical description of psychopathy in the twentieth century. The term "mask of sanity" derived from Cleckley's belief that a psychopath can appear normal and even engaging, but that the "mask" conceals a mental disorder. By the time of his death, Cleckley was better remembered for a vivid case study of a female patient, published as a book in 1956 and turned into a movie, The Three Faces of Eve, in 1957. His report of the case (re)popularized in America the controversial diagnosis of multiple personality disorder. The concept of psychopathy continues to be influential through forming parts of the diagnosis of antisocial personality disorder, the Psychopathy Checklist, and public perception.

Abraham "Abba" Ptachya Lerner was a Russian-born British economist.

Hannibal Gísli Valdimarsson was a politician from Iceland.

Francis Otto Schmitt was an American biologist and Institute Professor at the Massachusetts Institute of Technology.

Rudolf Carl Ising was an American animator who created the Warner Bros. Cartoons and MGM Cartoons and his collaboration with Hugh Harman during the golden age of American animation. In 1940, Ising produced William Hanna and Joseph Barbera's first cartoon, Puss Gets the Boot, a cartoon featuring characters later known as Tom and Jerry.