Charles Hector Jacquinot was a noted mariner, best known for his role in early French Antarctic surveys.
He was an ensign on the Coquille. His first trip to Antarctica was made in 1826–29 with Jules Dumont d'Urville. For that voyage, Jacquinot was awarded the Cross of Honor.
Jacquinot held the rank of lieutenant when he returned to Antarctica with d'Urville as second-in-command. He was commander of the expedition corvette Zelee in the late 1830s. The ships departed from Toulon in September 1837. The mission of the expedition was to survey the Straights of Magellan, then head to the Weddell Sea.
Mount Jacquinot was named for him by d'Urville, who was said to have been his best friend.
After d'Urville's passing, Jacquinot supervised the publication of the last expedition's narrative but the real writer of the 7 "Histoire du voyage" last volumes was Clément Adrien Vincendon-Dumoulin (fr).
He died soon after retiring from the Naval General Staff in 1879. He was said to have been modest, no doubt a result of his request to be buried without military honors.