Dieffenbach (surname)

Dieffenbach is a German surname. Notable people with the surname include:


 * Edouard Dieffenbach (1897–1972) French military officer, World War I veteran
 * Ernst Dieffenbach (1811–1855), German physician, geologist and naturalist
 * Georg Christian Dieffenbach (1822–1901), German poet and theologian
 * Johann Friedrich Dieffenbach (1792–1847), German surgeon
 * Joseph Dieffenbach (1796–1863), German gardener