David Martínez (businessman)

David Martínez Guzmán (born in Monterrey, Nuevo León, Mexico 1957) is a Mexican investor who is the founder and managing partner of Fintech Advisory. This firm specializes in corporate and sovereign debt. Fintech Advisory has offices in London and New York City, and he currently divides his time between those two cities.

Described as "the most influential Mexican on Wall Street," Martínez played a major role in the restructuring of Argentina's sovereign debt and described himself in 2013 as having participated in nearly every restructuring of sovereign debt during the previous 25 years. His investments have been characterized as extending "from New York to Patagonia." He is a major holder of assets in Argentina, with Fintech Media LLC, a subsidiary of Fintech Advisory, owning "more than a billion dollars in financial assets" in Argentina alone.