Marco Diaz

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