Onatas (Greek: Ὀνάτας; fl. c. 5th century BC) of Croton or Tarentum was a Pythagorean philosopher. Nothing is known about his life, but a long passage from a work entitled On God and the Divine (Greek: Περὶ θεοῦ καὶ θείου) is preserved Stobaeus. The work probably dates from the 1st century BC or AD and is part of the pseudonymous Neo-Pythagorean literature.
The author ("Pseudo-Onatas") argues that God is a governing part of the universe, although the universe itself is not God but only divine. He argued against the belief in a single deity on the basis of the many "powers" in the universe; they must belong to different gods. He also claimed that the earthy mixture of the body defiles the purity of the soul.
- Iamblichus, Vit. Pyth. 267
- Joannes Laurentius Lydus, De Mens. 2. 12
- Trevor Curnow, (2006), The philosophers of the ancient world: an A to Z guide, page 201
- Stobaeus, i. 1. 39
- Documenti e studi sulla tradizione filosofica medievale, (1999), Volume 10, page 3. Società internazionale per lo studio del Medioevo latino, Centro italiano di studi sull'alto Medioevo.
- P. L. Reynolds, "The Essence, Power and Presence of God" in Édouard Jeauneau, Haijo Jan Westra, (1992), From Athens to Chartres: neoplatonism and medieval thought, page 355. BRILL
- James M. Reese, (1970), Hellenistic influence on the Book of Wisdom and its consequences, page 56. Pontificium Institutum Biblicum
- James M. Reese, (1970), Hellenistic influence on the Book of Wisdom and its consequences, page 87. Pontificium Institutum Biblicum