Brianna Hoy (born 7 July 2000) is an Australian rugby union player who plays in the Prop position. She competed for at the 2025 Women's Rugby World Cup.
In 2021, she debuted for the Waratahs when they won their fourth Super W championship after defeating the Reds in the final.
Hoy started in her international debut for against at the inaugural 2023 WXV 1 tournament that was held in New Zealand.
She sustained an ACL injury during training in the Wallaroos 2024 WXV 2 campaign and was sidelined for 10 months.
In 2025, she was selected in the Wallaroos side for the Women's Rugby World Cup in England.