The Kallikak Family: A Study in the Heredity of Feeble-Mindedness was a 1912 book by the American psychologist and eugenicist Henry H. Goddard, dedicated to his patron Samuel Simeon Fels. Supposedly an extended case study of Goddard’s for the inheritance of "feeble-mindedness", a general category referring to a variety of mental disabilities including intellectual disability, learning disabilities, and mental illness, the book is noted for factual inaccuracies that render its conclusions invalid. Goddard believed that a variety of mental traits were hereditary and that society should limit reproduction by people possessing these traits.

Henry Herbert Goddard was an American psychologist, eugenicist, and segregationist during the early 20th century. He is known especially for his 1912 work The Kallikak Family: A Study in the Heredity of Feeble-Mindedness, which he himself came to regard as flawed for its ahistoric depiction of the titular family, and for translating the Binet intelligence test into English in 1908 and distributing an estimated 22,000 copies of the translated test across the United States. He also introduced the term "moron" for clinical use.