List of 636 Serial Killers
Sorted by Most Years Active

This list of 636 serial killers has been sorted by the number of years the killer was active in his/her acts as a serial killer.

Years Active: the amount of time between his/her first kill associated with their serial killing spree. Some serial killers may have killed someone prior where the killers motives and/or methods were unrelated to the spree the killer is being documented as.