Aristotle is frequently posited as the founder of modern narratology, and the Poetics is widely cited as narratology’s first, foundational work of narrative theory and criticism. This chapter examines Aristotle’s precepts on a range of key narratological features, ranging from actants and audiences, katharsis and character, ethics and episodes—and, above all, his identification of the primacy of plot or muthos as the organizing principle that configures the stuff of story into narrative discourse. It sees the Poetics as developing a broadly rhetorical model of narrative, concerned principally with the communication and cognition processes associated with storytelling. It also explores the extent to which Aristotle’s theory of narrative needs to be understood as responding to Plato’s Republic and considers the potential of Aristotle’s major exoteric works, On Poets and Homeric Problems, as aids to negotiating some of the vagaries of the Poetics.