Xeniades of Corinth was a Corinthian sophist of the 4th century BCE. The primary source for his life is Pseudo-Plutarch’s Lives of the Ten Orators, which records that he purchased the philosopher Diogenes the Cynic as a slave. When Xeniades asserted his mastery, Diogenes argued that a master must obey reason. Impressed, Xeniades entrusted him with educating his sons and managing his household.

No writings by Xeniades are attested in ancient sources. His classification as an orator likely stems from his description as a sophist, a term associated with rhetorical teaching. Xeniades’s significance lies solely in his role within the biographical tradition of Diogenes. Their encounter is a paradigmatic anecdote illustrating the Cynic principle that wisdom and reason supersede conventional social hierarchies like that of master and slave.