Gaius Antius Restio (fl. 68–53 BC) was a politician of the Roman Republic. He is principally known for the lex Antia sumptuaria, a law against luxury he passed as tribune of the plebs in 68 BC. This law forbade magistrates from attending banquets, in an attempt to contain political corruption. One of the few sources on Restio's life is a poem of his contemporary Catullus, telling that he was an enemy of Publius Sestius, a politician and good friend of Cicero.