Janni Thomsen (born 16 February 2000) is a Danish professional footballer who plays as a right-back or midfielder for the Utah Royals of the National Women's Soccer League (NWSL) and the Denmark national team.
Thomsen played for VÃÂ¥lerenga for five years, recording 100 appearances with the Norwegian club. On 7 March 2025, she signed a two-year contract plus a mutual option with the Utah Royals of the NWSL.
She made international debut on the Danish national team on the 4 March 2020, against Norway at the 2020 Algarve Cup.