Isaac Humala Núñez (born 1931) is a Peruvian labour lawyer and the ideological leader of the Movimiento Etnocacerista, a group of ethnic nationalists in Peru.

One of his other sons, Antauro Humala, a former army major, ran a rebellion against the government's policies in the Andean city of Andahuaylas in December 2004, in which a police station was seized and some people were killed.

His eldest son, Ulises Humala, also ran for president in 2006, and currently occupies a full-time position as a professor at the National University of Engineering in Peru.

[1] Likewise, he founded the Peruvian Nationalist Movement (MNP) - a political group that assumes the postulates of "ethnocacerism" - according to an agreement taken in Alto de la Alianza, Tacna, on 29 October 2003 (third anniversary of the uprising of his sons against the Fujimori government), setting the primary objective of gaining electoral power but without ruling out the possibility of using the armed means.

This came after a letter was signed by several public figures, including Ulises and fellow candidates Javier Diez Canseco and Alberto Moreno, demanding a fair trial for Polay.