These terrorist groups are the top 6 ranked by the total number of terrorist attacks they organized over the years.
| Group Name | Total Events | Total Killed | |
|---|---|---|---|
| 1 | Shining Path (SL) | 4518 | 11570 |
| 2 | Farabundo Marti National Liberation Front (FMLN) | 3351 | 8065 |
| 3 | Irish Republican Army (IRA) | 2673 | 1809 |
| 4 | Revolutionary Armed Forces of Colombia (FARC) | 2045 | 5240 |
| 5 | Taliban | 2030 | 5770 |
| 6 | Basque Fatherland and Freedom (ETA) | 2027 | 818 |
