Quentin Meillassoux is a French philosopher. He teaches at the Université Paris 1 Panthéon-Sorbonne, and is the son of the anthropologist Claude Meillassoux.
Meillassoux is a former student of the philosophers Bernard Bourgeois and Alain Badiou. Badiou, who wrote the foreword for Meillassoux's first book After Finitude (Après la finitude, 2006), describes the work as introducing an entirely new option into modern philosophy, one that differs from Immanuel Kant's three alternatives of criticism, skepticism, and dogmatism. The book was translated into English by philosopher Ray Brassier. Meillassoux is associated with the speculative realism movement.