François Coulomb the Younger (La Ciotat, 1691 - Toulon, July 1751) was a French naval architect (ingénieur-constructeur), the son of François Coulomb the Elder.
During his career, he designed 18 ships for the French Navy, and oversaw the construction of most of them.
Both ships were longer than their predecessors, each allowing an extra pair of guns on their lower decks.
In 1745, he designed the 64-gun Triton, and the 74-gun Conquérant (1746), which was rebuilt in 1764 to the specifications of the Citoyen class.
The plans were completed just before he died, and the ship was built by Joseph Chapelle and launched in 1756.