Sandra Zaniewska (born 3 January 1992) is a Polish tennis coach and former professional player. In her career, she won ten singles tournaments as well as a further seven in doubles on the ITF Circuit, and was the runner-up of the 2009 Australian Open in girls' doubles, with partner Aleksandra Krunić. Zaniewska, who competed on the pro tour until June 2017, began coaching Ukrainian professional tennis player Marta Kostyuk in July 2023. She previously coached Alizé Cornet and Petra Martić.

Personal life

Sandra Zaniewska was born to Maciej Zaniewski and Teresa Zaniewska on 3 January 1992 in Katowice. She has one brother, Bartek. Sandra began playing tennis at age ten.

ITF finals

Singles: 20 (10–10)

Doubles: 22 (7–15)

Junior Grand Slam finals

Girls' doubles