This is a list of prime ministers of the United Kingdom by age. This table can be sorted to display prime ministers of the United Kingdom by name, order of office, date of birth, age at appointment, length of retirement, or lifespan. Age at appointment is determined by the day a prime minister assumed office for the first time. Length of retirement is determined from the day a prime minister leaves office for the final time until their death.
Where the prime minister in question is still living, their longevity is measured up to .
<br> <br> <br>
This is a graphical lifespan timeline of the prime ministers of the United Kingdom and they are listed in order of office.
<div style="overflow:auto"> </div>
The following chart shows prime ministers by their age (living prime ministers in green), with the years of their premiership in blue.