Quintus Antonius Merenda was a consular tribune of the Roman Republic in 422 BC.
The year saw the beginning of the trial against the former consul Gaius Sempronius Atratinus, who had in 423 BC unsuccessfully fought against the Volscians.
The trial was led by the plebeian tribunes and the prosecutor Lucius Hortentius.
The two known Antonia of the early Republic, Quintus and his father Titus, are traditionally seen as patricians, as there were no plebeian consuls prior to 366 BC.
This has led several classicists, such as Broughton, to consider Quintus and his father as plebeians and that no patrician branch of the Antonia ever existed.