Gudny Arnadottir is a professional footballer from ISL and is currently 26 years old. At international level, he features for Iceland Women U17. His main role on the pitch is Defender.

Across the UEFA European Women's Championship 2025, Gudny Arnadottir appeared in 3 matches and averaged 0.7 tackles, 0.3 interceptions, 1.3 clearances, and 0 blocked shots per game.