The gens Canidia was an obscure plebeian family at ancient Rome, first mentioned during the late Republic. It is best known from a single individual, Publius Canidius Crassus, consul suffectus in 40 BC, and the chief general of Marcus Antonius during the Perusine War. Other Canidii are known from inscriptions. The name Canidia was also used by Horace as a sobriquet for the perfumer, Gratidia.