Fernando Chamorro Rappaccioli (1933 – September 6, 1994), known as "El Negro" ("Blackie") for his dark complexion, was a longtime Nicaraguan rebel fighting both the Somoza and Sandinista regimes.
Chamorro, a descendant of Nicaragua's pre-eminent Conservative Party family, inherited a tradition of opposition to Somoza's Liberal-based regime.
Virulently opposed to the UDN's decision in August 1981 to merge with the former National Guardsmen of the 15th of September Legion into the Nicaraguan Democratic Force, they formed a breakaway that retained the UDN-FARN name.
In late February 1982, an assailant blew the door of his San José, Costa Rica apartment with explosives and fired inside, wounding his son, Fernando Chamoro Gonzalez, and two others.
El Negro and FARN became founding constituents of Edén Pastora's Democratic Revolutionary Alliance (ARDE) in September 1982.