Onomastus (disambiguation)

Look up Onomastus in Wiktionary, the free dictionary.

Onomastus is a genus of jumping spiders.

Onomastus may also refer to:

• Onomastus of Macedon (fl. 185 BC), an ancient Greek officer
• Onomastus of Smyrna (fl. 688 BC), an ancient Greek boxer
• Onomastus of Elis (fl. 6th century BC), son of Agaeus, according to Herodotus, one of the many Greek suitors who came to court Agariste of Sicyon