Social Outcast (foaled 1950) was an American Thoroughbred racehorse sired by Shut Out (a son of the great Equipoise) out of the mare Pansy (by the English import Sickle). He was bred in Maryland by Mrs. Raymond A. Van Clief. Social Outcast was owned and named by Alfred Gwynne Vanderbilt II, who often played with the names of the sire and dam to provide a name for his horse. Thus, a mating of Shut Out and Pansy produced Social Outcast.