|Centuries:||10th century – 11th century – 12th century|
|Decades:||990s 1000s 1010s – 1020s – 1030s 1040s 1050s|
|Years:||1017 1018 1019 – 1020 – 1021 1022 1023|
- Goryeo and the Liao Dynasty exchange embassies following a seven-year territorial disagreement.
- The massive Kandariya Mahadeva Hindu Temple is completed in the Chandela capital of Khajuraho.
- The city of Saint-Germain-en-Laye is founded.
- Henry II of Germany starts his third Italian military campaign .
- Canute the Great establishes the laws of England.