Janni Thomsen is a professional footballer from DEN and is currently 27 years old. He is on the books of Utah Royals Women and wears shirt number 7. At international level, he features for Denmark Women. His main role on the pitch is Defender. He measures 167cm in height and weighs 55kg.

His latest transfer saw him join Valerenga Women from VSK Aarhus(w) via Free on 2020-06-30.

Across the United States Women's National Soccer League 2025, Janni Thomsen appeared in 26 matches and averaged 1.8 tackles, 0.8 interceptions, 2.3 clearances, and 0.2 blocked shots per game.