21

This page is about the year 21. For other uses, see 21 (disambiguation).

Millennium:	1st millennium
Centuries:	1st century BC – 1st century – 2nd century
Decades:	0s BC  0s  10s  – 20s –  30s  40s  50s
Years:	18 19 20 – 21 – 22 23 24

21 by topic
Arts, history, and science
Archaeology Architecture Art Literature Poetry Music Science
Countries
Lists of leaders
State leaders Colonial governors Religious leaders
Birth and death categories
Births Deaths
Establishments and disestablishments categories
Establishments Disestablishments
Works category
Works

21 is a year in the 1st century. It was a common year starting on Wednesday of the Julian calendar. At the time, it was known as the Year of the Consulship of Augustus and Caesar.

Events

• Revolt of the Aedui under Julius Florus and Julius Sacrovir, suppressed by Gaius Silius.
• Tiberius is a Roman Consul for the fourth time.
• Beginning of the revolt in Africa led by Tacfarinas.
• The Romans create a buffer state in the territory of the Quadi in southern Slovakia.
• Construction of a barracks for the Praetorian Guard on the Quirinal.
• Pens and metal writing tools are made in Rome.

Deaths

• Publius Sulpicius Quirinius, Roman governor of Syria
• Marcus Valerius Messalla Barbatus, Roman Consul (or 20)
• Arminius, Germanic leader who slaughtered three Roman legions at the Battle of the Teutoburg Forest.
• Empress Wang
• King Daeso of Dongbuyeo