Mariano Hood (born 14 August 1973) is a retired left-handed professional Argentine tennis player who specialized in doubles.

He partnered either Sebastián Prieto or Lucas Arnold Ker to win most of his doubles titles, although he did have other partnerships as well.

A week later, Hood teamed with Eduardo Schwank to win the Santiago, Chile, Challenger on the ITF Men's Circuit.

Directly after this, he won a second title, at Chiasso located in Switzerland with Alberto Martín in a Challenger event.

Two weeks later, a third Challenger triumph arrived with a victory over Marc Fornell and Caio Zampieri alongside Guillermo García López.