| Northern Bloc of the AUC | |
| War: | Colombian armed conflict |
| Active: | Officially completed demobilization in March 2006. |
| Ideology: | Anti-communism |
| Leaders: | Salvatore Mancuso Rodrigo Tovar Pupo Vicente Castaño |
| Area: | Cesar, La Guajira, Magdalena, Atlántico, Santander, and Norte de Santander |
| Partof: | United Self-Defense Forces of Colombia |
| Opponents: | Revolutionary Armed Forces of Colombia National Liberation Army |
The Northern Bloc of the United Self-Defense Forces of Colombia (es|'''Bloque Norte de las AUC''') was a Colombian paramilitary organization that operated until March 2006, when it demobilized. A National Center for Historical Memory report found that the group perpetrated 456 massacres from 1996 to 2006.[1]