Gaius Antistius Vetus can refer to the following Roman people:
- Gaius Antistius Vetus (praetor 70 BC)
- Gaius Antistius Vetus (consul 30 BC)
- Gaius Antistius Vetus, Augustus's quaestor, consul in 6 BC
- Gaius Antistius Vetus (consul 23)
- Gaius Antistius Vetus (consul 50)
- Gaius Antistius Vetus (consul 96)
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