- Queen Elizabeth II
- 70:214 year(s):day(s)
- United Kingdom ()
The longest-reigning queen ever is Her Majesty Queen Elizabeth II (UK, b. 21 April 1926), who succeeded to the throne on 6 February 1952 following the death of her father, King George VI. As of her death on 8 September 2022, Queen Elizabeth II had reigned without interruption for 70 years 214 days.
Queen Elizabeth II ascended to the throne at the age of 25 years 291 days, and passed at the age of 96 years 140 days.