Valentín Demateis is a 25-year-old professional football player from ARG. He plays primarily as a Midfield. His preferred foot is Right.

His most recent move was a from Nublense to Concón National on 2026-02-23.

Across 18 appearances in the CHI Segunda División 2025, Valentín Demateis registered 0 goals and 0 assists, while completing 0 key passes out of 0 total passes with a passing accuracy of -.