Gesner is a surname. Notable people with the surname include:
Abraham Pineo Gesner (1797–1864), Canadian physician and geologist Alonzo Gesner (1842–1912), American politician and surveyor in Oregon Conrad Gesner (1516–1565), Swiss naturalist, and botanical reference for Gesner Johann Matthias Gesner (1691–1761), German classical scholar Clark Gesner (1937-2002), American composer, songwriter, author, and actor
See also Gessner