Timaeus of Locri (/taɪˈmiːəs/; Ancient Greek: Τίμαιος ὁ Λοκρός, romanized: Tímaios ho Lokrós; Latin: Timaeus Locrus) is a character in two of Plato's dialogues, Timaeus and Critias. In both, he appears as a philosopher of the Pythagorean school. If there ever existed a historical Timaeus of Locri, he would have lived in the fifth century BC, but his historicity is dubious since he only appears as a literary figure in Plato's works; all other ancient sources are either based on Plato or are fictional accounts.