This is a list of longest prison sentences served by a single person, worldwide, without a period of freedom followed by a second conviction.
These cases rarely coincide with the longest prison sentences given, because some countries have laws that do not allow sentences without parole or for convicts to remain in prison beyond a given number of years (regardless of their original conviction).
Indicates cases where imprisonment is still ongoing On February 11, 2021, Ligon was released from prison at the age of 83.
[10][12] He spoke to the BBC World Service about his life in May 2021.
Death row prisoners, who are usually also held in isolation, are not included.