Gnaeus
- Ancient Rome
- Cn (disambiguation)
- Gnaeus (praenomen)
- Gnaeus Acerronius Proculus
- Gnaeus Arrius Antoninus
- Gnaeus Aufidius Orestes
- Gnaeus Calpurnius Piso (disambiguation)
- Gnaeus Claudius Severus (consul 167)
- Gnaeus Cornelius Cinna Magnus
- Gnaeus Cornelius Dolabella
- Gnaeus Cornelius Scipio Asina
- Gnaeus Cornelius Scipio Calvus
- Gnaeus Domitius Afer
- Gnaeus Domitius Ahenobarbus (consul 32 BC)
- Gnaeus Domitius Ahenobarbus (consul 32)
- Gnaeus Domitius Ahenobarbus (disambiguation)
- Gnaeus Domitius Corbulo
- Gnaeus Egnatius
- Gnaeus Gellius
- Gnaeus Julius Agricola
- Gnaeus Julius Verus
- Gnaeus Lucretius
- Gnaeus Mallius Maximus
- Gnaeus Manlius
- Gnaeus Manlius Cincinnatus
- Gnaeus Manlius Vulso (consul 189 BC)
- Gnaeus Marcius Coriolanus
- Gnaeus Naevius
- Gnaeus Octavius (consul 87 BC)
- Gnaeus Papirius Aelianus
- Gnaeus Papirius Carbo
- Gnaeus Pompeius (son of Pompey the Great)
- Gnaeus Pompeius Longinus
- Gnaeus Pompeius Magnus
- Gnaeus Pompeius Strabo
- Gnaeus Pompeius Trogus
- Gnaeus Sentius Saturninus
- Gnaeus Servilius Caepio (consul 203 BC)
- Gnaeus Servilius Geminus