French surname
"of the bridge"

Dupont Origin and Meaning

The name Dupont is a boy's name meaning "of the bridge".

This French last name is often written as Dupont, but can also be rendered as Du Pont, DuPont, duPont, or du Pont. In the US, it's commonly associated with the du Pont family — one of the wealthiest old money American families whose fortune arose from manufacturing gunpowder.