Gaius Cassius Longinus was a Roman jurist and politician from the first century CE. Born around 13 BC, he was the grandnephew of Servius Sulpicius Rufus, he was also a great-grandnephew or great-grandson of Gaius Cassius Longinus, one of Caesar's assassins. Longinus was suffect consul of the second half of the year 30 as the colleague of Lucius Naevius Surdinus.
- Occupation
- jurist-consultant, politician, writer
- Position held
- ancient Roman senator, Roman governor, legatus Augusti pro praetore Syriae
- Citizenship
- Ancient Rome
- Born
- 5 BC