Lammot du Pont I was a chemist and a key member of the du Pont family and its company in the mid-19th century.

Éleuthère Irénée du Pont de Nemours was a French-American chemist and industrialist who founded the gunpowder manufacturer E. I. du Pont de Nemours and Company. His descendants, the du Pont family, have been one of the richest and most prominent American families since the 19th century, with generations of influential businessmen, politicians and philanthropists. In 1807, du Pont was elected a member of the American Philosophical Society in his adopted hometown of Philadelphia.