Pertempuran Cajamarca (ڤرتمڤورن كجامركا) merupakan suatu serangan mengejut ke atas rombongan diraja Inca yang telah diatur oleh Francisco Pizarro pada petang 16 November1532 di plaza besar Cajamarca. Serangan hendap itu berjaya menawan Inca, Atahualpa tetapi ia telah meragut banyak nyawa pengikut beliau.
^"That Night, Pedro de Candia, a giant greek who was captain of the artillery, worked on preparing 4 small cannons they had brought on horseback, and also readied the fewer than a dozen harquebuses, primitives muskets...",page 70, The Last Day of The Incas, author Kim MacQuarrie
^"Miraculously, in the space of just a few hours, the Spaniards had killed or wounded perhaps six or seven thousands native (some of these of course, had simply been trampled to death), while they themselves hadn't lost a single man" "...one Spaniard tried to stab Atahualpa with his knife to kill him. But Francisco Pizarro parried the blow and in doing so the Spaniard trying to kill Atahualpa wounded the governor [F. Pizarro] on the hand, The Last Day of the Incas, page 84, Author Kim MacQuarrie