Tammy Duncan is a hockey player from Minneapolis, Minnesota. Tammy was a member of the District 5 Ducks and played Forward as number 5. Tammy appears in the film The Mighty Ducks. She is Tommy's older sister. She joins the team when Coach Bombay approaches her and her brother about making the switch from figure skating to hockey. At first she was unhappy at the thought of switching, as indicated when she shoves her brother down for talking back to her about her joining; eventually she becomes passionate about the game and the team itself. She is portrayed by Jane Plank.