Brithany Arronis is a 18-year-old professional football player from CRC. At the international level, he represents Costa Rica U17 Women. He plays primarily as a Defender.

Throughout the CONCACAF U17 Women's Championship 2025-2026, Brithany Arronis featured in 7 matches, averaging 1.3 tackles, 0.1 interceptions, and 0.9 clearances per game, while blocking 0 shots per game.