Marc-Antoine Eidous (c.1724 – c.1790) was a French writer, translator and Encyclopedist^[1] born in Marseilles.

His translations included works on the subjects of philosophy, travel and agriculture by English and Scottish authors:

• The Dictionnaire universel de médecine (Paris, 1746–1748, 6 folio volumes) with Denis Diderot, Julien Busson and François-Vincent Toussaint from the Medicinal Dictionary of Robert James
• Reflexions sur l'Origine des Nations, tirées de leur langage, (1750);
• Histoire de la poésie (1764), by John Brown
• Métaphysique de l'âme, ou Théorie des sentiments moraux (1764), translating The Theory of Moral Sentiments (1759) by Adam Smith
• Agriculture complète, ou l'Art d'améliorer les terres (1765) from The whole art of husbandry, or, the way of managing and improving of land (1707) by John Mortimer
• The Voyages depuis S. Pétersbourg en Russie dans diverses contrées de l'Asie... (1766), from Travels from St. Petersburg in Russia, to diverse parts of Asia (1764) by John Bell
• The Œuvres philosophiques (Philosophical Works) of Francis Hutcheson
• Dissertation historique et politique sur la population de l'ancien tems comparée ace celle du nôtre (Amsterdam, 1769), from Robert Wallace's A Dissertation on the Numbers of Mankind in Ancient and Modern Times (1753)

Eidous also contributed to the Encyclopédie, including an entry on heraldry (blason).