List of events that occurred in 21 AD:
Events[]
By place[]
Roman Empire[]
- Revolt of the Aedui under Julius Florus and Julius Sacrovir, suppressed by Gaius Silius.
- Emperor Tiberius is a Roman Consul for the fourth time.
- The Romans create a buffer state in the territory of the Quadi in southern Slovakia.
- Barracks are constructed for the Praetorian Guard on the Quirinal.
Asia[]
- King Daeso of Dongbuyeo is killed in battle against the armies of Goguryeo, led by its third ruler, King Daemusin.
By topic[]
Arts and sciences[]
- The manufacture of pens and metal writing tools begins in Rome.