Mary Guerra is a 19-year-old professional football player from ECU. At the international level, he represents Ecuador U17 Women. He plays primarily as a Midfield.

Across 6 appearances in the CONMEBOL U20 Women's Sudamericano 2026, Mary Guerra registered 4 goals and 0 assists, while completing 5 key passes out of 131 total passes with a passing accuracy of 15.3.