|Covid-19|Note: These monarchs are grouped according to length of reign by year in whole numbers. Within each year-grouping, they appear in historical order. In a given year, there may have been a wide array of actual reign lengths based on days. Thus, this table does not present a pure ranking of monarchs.
List of longest-reigning monarchs Wikipedia
This is a list of the longest-reigning monarchs of all time, detailing monarchs and lifelong leaders who reigned for more than 50 years, sorted by length of reign.Currently reigning monarchs are highlighted.
Note: the abbreviation "(HRE)" indicates a sovereign state within the Holy Roman Empire.