The Intelligence Battalion 3-16 or Battalion 316 was a unit of the Honduran Army in charge of carrying out assassinations, torture, and disappearances against alleged political opponents of the government during the 1980s. The unit had several names; its reorganization as "Intelligence Battalion 3-16" is attributed to General Gustavo Álvarez Martínez, a name that indicated the unit's service to 3 military units and 16 battalions of the Honduran army.
Its members received training and support from the US Central Intelligence Agency both in Honduras and at secret locations on US soil. At least 19 of its members graduated from the Western Hemisphere Institute for Security Cooperation. He also received training from the Intelligence Battalion 601 of Argentina, and of Chile.