Marco Diaz or Marco Díaz may refer to:
People Marco Antonio Serna Díaz, herpetologist, ornithologist, and naturalist from Colombia Marco Vargas Diaz, Costa Rican economist and politician Marco Díaz, political candidate in the 2021 Chilean gubernatorial elections Marco Diaz Jr., record producer and DJ known as Infamous Marco Díaz, musician from the band Candela
Fictional characters Marco Diaz, a character in the animated television series Star vs. the Forces of Evil Marco Diaz, a character in the television series Bloodline
See also Marco Diaz Ávalos, football manager for Coras de Nayarit F.C. Marcos Díaz (disambiguation)