De Mun

de Mun is a French surname associated with the noble de Mun family.

Notable people with the surname include:
 * Adrien Albert Marie de Mun (1841-1914), French politician, nobleman, journalist, social reformer, and reactionary
 * Bertrand de Mun (1870-1963), French businessman and politician
 * Claude-Adrien de Mun (1773-1843), French politician
 * Jules de Mun (1782–1843), French-American fur trader