Titus Quinctius Capitolinus Barbatus (513 BC - after 423 BC) was a Roman statesman and general who served as consul six times. Titus Quinctius was a member of the gens Quinctia, one of the oldest patrician families in Rome.
He was the son of Lucius Quinctius and grandson of Lucius Quinctius. He was possibly the brother of Lucius Quinctius Cincinnatus, who was suffect consul and dictator in 460 BC, 458 BC and 439 BC. His son, who bore the same name, Titus Quinctius Capitolinus Barbatus, was elected consul in 421 BC and was possibly the military tribune with consular power in 405 BC.
According to Livy, Titus Quinctius was still alive in 423 BC, aged 90 years.
In 471 BC Titus Quinctius was elected consul with Appius Claudius Sabinus as his colleague. The latter was chosen by the Senate because of his uncompromising character as well as his father's hostility towards the plebs. Appius was expected to lead the fight against the bill proposed by the tribune of the plebs, Volero Publilius, who wanted to introduce the election of the tribunes of the plebs by the Tribal Assembly, tribe by tribe, thus excluding the vote of the patricians and their clients. If the law was ratified, the tribunes would gain greater political independence from the patricians and thus prevent them from influencing their selection and their actions.
After the turmoil in 473 BC, which was caused by the blockage of an agrarian law three years before and the death of a tribune who attempted to bring to justice former consuls, there was more unrest among the Roman people. The consul Titus Quinctius became a peacemaker, unlike Appius who strongly opposed the tribunes. Titus Quinctius barely managed to calm the crowd by adopting a more conciliatory approach. He forced Appius to retreat into the Curia Hostilia. There the senators urged Appius to abandon his intransigent attitude because it could lead to serious civil unrest. Isolated and deprived of political support, Appius was unable to do anything but permit the vote. The law, Lex Publilia Voleronis, was finally proclaimed.