The son of an otherwise unknown Gaius Junius Silanus, it is speculated that Junius Silanus was related to Marcus Junius Silanus (perhaps his cousin). Elected consul in 17 BC alongside Gaius Furnius, it has been postulated that he may have been a proconsular governor of Asia around 24/23 BC, but this has been challenged as highly unlikely. He may have been the biological father of Quintus Caecilius Metellus Creticus Silanus. Nothing further is known about his career.
- Attilio Degrassi, I fasti consolari dell'Impero Romano dal 30 avanti Cristo al 613 dopo Cristo (Rome, 1952), p. 4
- Syme, pp. 190f
- Syme, p. 191
- Syme, p. 190