|Centuries:||10th century – 11th century – 12th century|
|Decades:||990s 1000s 1010s – 1020s – 1030s 1040s 1050s|
|Years:||1018 1019 1020 – 1021 – 1022 1023 1024|
- The Moorish taifa (state) of Valencia (in modern Spain) becomes independent, after being ruled by Slavic soldiers for about ten years.
- Senekerim-Hovhannes Artsruni, king of Vaspurakan (Greater Armenia), surrenders his kingdom to the Byzantine Empire. He receives in return Sebasteia and becomes governor of Cappadocia.