Delessert is a surname. Notable people with the surname include:
Adolphe Delessert (1809–1869), French explorer and naturalist Édouard Delessert (1828–1898), French painter, archaeologist and photographer Étienne Delessert (banker) (1735–1816), French banker Étienne Delessert (illustrator) (1941–2024), Swiss graphic artist and illustrator François-Marie Delessert (1780–1868), French banker and politician Jules Paul Benjamin Delessert (1773–1847), French banker and naturalist Jason Delessert, American who sued a hearing aid company after being denied medical coverage