People from Haute-Marne

Charles Jacques Bouchard (6 September 1837 – 28 October 1915) was a French pathologist and an esperantist born in Montier-en-Der, a commune the department of Haute-Marne.

Maurice Noël Floquet (25 December 1894 – 10 November 2006) was, aged 111 and 320 days, France's oldest man on record and was one of the last surviving French veterans of World War I. He is also France's longest-lived soldier of all time.

Judith Magre (born 20 November 1926) is a French actress, born in Montier-en-Der, Haute-Marne.

Nicolas Camille Flammarion FRAS (French: [nikɔla kamij flamaʁjɔ̃]; 26 February 1842 – 3 June 1925) was a French astronomer and author. He was a prolific author of more than fifty titles, including popular science works about astronomy, several notable early science fiction novels, and works on psychical research and related topics. He also published the magazine L'Astronomie, starting in 1882. He maintained a private observatory at Juvisy-sur-Orge, France.