Titus Quinctius Poenus (Pennus) Cincinnatus was a consul of the Roman Republic in 431 and 428 BC and a consular tribune in 426 BC. He might have been consular tribune again in 420 BC. Quinctius belonged to the powerful Quinctia gens and was the son of one of the early republics most famous figures, the twice appointed dictator Lucius Quinctius Cincinnatus. He was probably the younger brother of Lucius Quinctius Cincinnatus, consular tribune in 431 BC. Filiations indicate that he is the father of , consular tribune in 388 BC.