984
Year 984 was a leap year starting on Tuesday of the Julian calendar.
Events
By place
Europe
- Spring - German boy-king Otto III is seized by the deposed Henry II, Duke of Bavaria, who has recovered his duchy and claims the regency as a member of the Ottonian Dynasty. But Henry is forced to hand over Otto to his mother, empress consort Theophanu.
- King Ramiro III of León loses his throne to Bermudo II, who also becomes ruler of the entire Kingdom of León.
Japan
- Fall - Emperor En'yū abdicates the throne in favor of his 16-year-old son Kazan after a 15-year reign. En'yū retires and becomes a Buddhist priest.
By topic
Technology
- Qiao Weiyue, a Chinese engineer, innovates the first known use of the double-gated canal pound lock during the Song dynasty, for adjusting different water levels in segments of the Grand Canal in China.
Religion
- August 20 - Pope John XIV dies a prisoner in the Castel Sant'Angelo at Rome after a 1-year reign, having either been murdered or starved to death.
- Anti-Pope Boniface VII returns from Constantinople and gains support from the powerful Roman Crescentii family. He takes hold of the papal throne.