Lammot du Pont II

Lammot du Pont II was an American businessman who was the head of the du Pont family's E. I. du Pont de Nemours and Company for 22 years.

Lammot was born on October 12, 1880, in Wilmington, Delaware. He was the ninth, and youngest boy, of eleven children born to chemist Lammot du Pont (1831–1884), and his wife, Mary (née Belin) du Pont (1839–1913). Among his siblings were brothers Pierre S. du Pont and Irénée du Pont, who were both involved in the Du Pont Company. His father died during a nitroglycerin explosion in 1884.

His maternal grandparents were Henry Hedrick Belin and Isabella (née d'Andelot) Belin and his paternal grandparents were Alfred Victor DuPont and Margaretta Elizabeth (née Lammot) DuPont. His was also a great-grandson of the French-born Éleuthère Irénée du Pont, the founder of E. I. du Pont de Nemours and Company.

On March 15, 1926, Lammot du Pont was elected President of E.I. du Pont de Nemours Co., succeeding elder brother Irénée du Pont, who was elected Chairman of the Board of Directors.

Lammot served as president until May 20, 1940, when he was succeeded by Walter S. Carpenter Jr. At the same time, Lammot replaced another brother, Pierre S. du Pont, as chairman of the board.

Du Pont died on July 24, 1952, in New London, Connecticut of heart disease at age 71.