Anna Stera-Kustusz, born on November 14, 1974, in Duszniki Zdrój, is a former Polish biathlete. Stera-Kustusz participated in three Olympic Games and six World Championships. She began her biathlon career in 1991, competing for the MKS Duszniki Zdrój club. The student from Duszniki Zdrój is married. Her debut season in the Biathlon World Cup was in 1993, where she finished 58th in an individual event in Oberhof. At her first Biathlon World Championship in Borowez, she won a bronze medal in the team competition alongside Zofia Kiepińska, Krystyna Liberda, and Helena Mikołajczyk. The highlight of her second season was her participation in the 1994 Olympic Games in Lillehammer, where she placed 62nd in the sprint and 11th with the relay team. A year after the Games, she was able to score points for the first time, finishing 17th in an individual event on the Olympic course.