Fernando Daniel Martínez (born 30 May 1993) is a Mexican distance runner who competes over distances from 800 metres to the 10K run. He has won five national titles at the , three at 1500 metres and two at 5000 metres. Martínez was the gold medallist over 5000 m at the 2019 Pan American Games and the 1500 m winner at the 2018 Central American and Caribbean Games. He made his debut over the 10 kilometres distance in 2020. In 2020, Martínez's ex-partner publicly denounced him for gender-based violence during their four-year relationship.