Triaria (also known as Junia Calvina Milonia Caecena Alba Terentia) was the second wife of Lucius Vitellius the younger (the brother of emperor Aulus Vitellius), in the 1st century CE.
She was the first-born daughter and among the children of Aemilia Lepida and Marcus Junius Silanus Torquatus, a member of the Junii Silani, a family of Ancient Rome. Her maternal grandparents were the princess Julia the Younger and consul Lucius Aemilius Paullus. Through her maternal grandparents she was a descendant of Roman Emperor Augustus, noble woman Scribonia, statesman Marcus Vipsanius Agrippa and consul Lucius Aemilius Lepidus Paullus (brother of the triumvir Marcus Aemilius Lepidus).
She married Lucius Vitellius the Younger, brother of the future Roman Emperor Vitellius, though they divorced before 49. In 48, she was falsely accused by Empress Agrippina the Younger and her former father-in-law of open affection with her brother Lucius Junius Silanus Torquatus. Calvina was exiled from Italy in early 49 and her brother committed suicide. After March 59, when Agrippina the Younger was murdered, her son Emperor Nero brought Calvina back from exile. Tacitus describes her as "attractive but shameless". Suetonius, Vespasian 23, implies that Junia Calvina was still living in 79. The date of her death is unknown but she was probably the last living descendant of Augustus in the Flavian dynasty.