Nijon () is a former commune in the Haute-Marne department in north-eastern France. On 1 June 2016, it was merged into the new commune of Bourmont-entre-Meuse-et-Mouzon.Arrêté préfectoral 23 May 2016 Its population was 95 in 2022.
See also Communes of the Haute-Marne department
References