The Timaeus (Greek: Τίμαιος) is a late Platonic dialogue in which the eponymous narrator provides an extended account of the creation and structure of the universe. One of the few dialogues known to the Medieval European West before the Renaissance, it had a major influence on the tradition of natural philosophy.
Free Online and Downloadable Texts
Classics in the History of Psychology: Timaeus translated by Benjamin Jowett. Online text.
Ellopos: Timaeus. Greek and English, translated by Benjamin Jowett. Online text.
Gutenberg: Timaeus by Plato, translated by Benjamin Jowett, multiple formats.
University of Adelaide (Internet Archive): Timaeus, translated by Benjamin Jowett. EPUB, HTML and MOBI formats.
Wikisource: Timaeus, translated by Benjamin Jowett.
History of Philosophy without any gaps: A Likely Story: Plato's Timaeus - podcast by philosopher Peter Adamson.
PhilPapers: Plato - Timaeus - bibliography with open access option.
Robert Craven: Timaeus concordance.
Stanford Encyclopedia of Philosophy: Timaeus.
The Great Conversation: Further reading at Tom's Learning Notes
Ancient Greek resources: Learn to read Greek classics in the original.
Bloom's Western Canon: Plato's Dialogues are listed.