This collection deals with utopias in the Greek and Roman worlds. Plato is the first and foremost name that comes to mind and, accordingly, 3 chapters (J. Annas; D. El Murr; A. Hazistavrou) are devoted to his various approaches to utopia in the Republic, Timaeus and Laws. But this volume's central vocation and originality comes from our taking on that theme in many other philosophical authors and literary genres. The philosophers include Aristotle (Ch. Horn) but also Cynics (S. Husson), Stoics (G. Reydams-Schils) and Cicero (S. McConnell). Other literary genres include comedic works from Aristophanes up to Lucian (G. Sissa; S. Kidd; N.I. Kuin) and history from Herodotus up to Diodorus Siculus (T. Lockwood; C. Atack; I. Sulimani). A last comparative chapter is devoted to utopias in Ancient China (D. Engels).