Lists of state leaders by age
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Since 1800, the youngest serving state leader has been 0-day-old Alfonso XIII, King of Spain, while the oldest has been 96-year-old Elizabeth II, Queen of the United Kingdom and the other Commonwealth realms.
This article contains various lists of state leaders organized by age, defined as heads of state and/or heads of government.
Oldest serving state leaders
Top ten currently serving
People currently serving as head of state and/or head of government, a party leader of a one-party state, or a representative of a head of state.
Top ten of all time
Youngest serving state leaders
Top ten currently serving
Top ten since 1800
Currently living
Oldest state leaders
The following lists show the oldest people who have served office as state leader (not limited to their age while in office).
Top ten living
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Top ten since 1800
Currently living