Derald George Langham (May 27, 1913 - May 10, 1991) was an American agricultural geneticist, sesame researcher, and founder of the Genesa Foundation.He is known as the "father of sesame" in the Western Hemisphere for his basic research on the genetics of sesame. Most of the sesame lines grown in the Americas came from his breeding work. Sesame plants are a rich source of vitamins and minerals, and Langham focused on cross-breeding the plant into more fruitful versions.