Hecataeus (Ἑκαταῖος) is a Greek name shared by several historical figures:
- Hecataeus of Miletus (born ca. 550 BC), historian
- Hecataeus of Abdera (born ca. 300 BC), philosopher and historian
- Hecataeus of Eretria (born ca. 300 BC), historian
- Hecataeus of Mytilene (born ca. 100 BC), sculptor