Henri Auguste Ménégaux (17 May 1857 – 15 July 1937) was a French ornithologist and malacologist born in Audincourt.
From 1910, with Louis Denise (1863-1914), he was publisher of the journal, Revue Française d'Ornithologie Scientifique et Pratique.
In 1901 he replaced Eugène de Pousargues (1859-1901) as assistant to Émile Oustalet (1844-1905) at the Muséum national d'histoire naturelle (mammals and birds).
Later he became deputy director of the laboratory headed by Édouard Louis Trouessart (1842-1927).
His studies included birds collected by the French Antarctic Expedition commanded by Jean-Baptiste Charcot (1867-1936).