List of 1523 Major News Events in History, Most Important Historical Events in 1523
| Date | Event |
|---|---|
| January 20, 1523 | Christian II is forced to abdicate as King of Denmark and Norway. |
| June 6, 1523 | Swedish regent Gustav Vasa is elected King of Sweden and, marking a symbolic end to the Kalmar Union, 6 June is designated the country's national day.[4] |
| June 9, 1523 | The Parisian Faculty of Theology fines Simon de Colines for publishing the Biblical commentary Commentarii initiatorii in quatuor Evangelia by Jacques Lefèvre d'Étaples. |
| June 10, 1523 | Copenhagen is surrounded by the army of Frederick I of Denmark, as the city will not recognise him as the successor of Christian II of Denmark. |
| July 1, 1523 | Jan van Essen and Hendrik Vos become the first Lutheran martyrs, burned at the stake by Roman Catholic authorities in Brussels. |