Characters in the Greek novels comprise a dizzying array of identities, but one group of people who have received barely any attention are Spartans. They appear only in Chariton of Aphrodisias and Xenophon of Ephesus, where analysis of their presence sheds crucial light on the novels’ literary and sociocultural agendas. After an introduction (section I), section II discusses Chaereas’ self-characterization as the Spartan Leonidas in book 7 of Chariton’s Chaereas and Callirhoe in the context of Imperial-period Sparta: its institutions (the Leonideia festival), prosopography (the Euryclid dynasty) and reputation for military greatness. I link these elements to the ‘kinsman of Brasidas’ in book 8, who can be directly connected to an Imperial-period descendant of Brasidas in Plutarch’s Sayings of Kings and Commanders, as well as to Thucydides’ Brasidas. Section III explores the Spartan identity of Aegialeus and Thelxinoe, the protagonists of an inset story told to Habrocomes in book 5 of Xenophon’s Ephesiaca. Details of their lives correspond closely to Spartan cultural phenomena familiar from Plutarch’s Life of Lycurgus, especially in connection with marriage customs. This has consequences for the evaluation of Xenophon as a witty and sophisticated novelist, and for his compositional date. Section IV draws out the significant parallels between the depiction of Spartans in Chariton and Xenophon, which form the basis of proposals regarding their literary and chronological relationships.