Kateryna Volodymyrivna Bondarenko (Ukrainian: Катерина Володимирівна Бондаренко, born August 8, 1986) is a professional female tennis player from Ukraine and a doubles champion at Australian Open 2008.
The younger sister of professional tennis player Alona Bondarenko, she was born in Kryvyi Rih, Ukraine, then part of the Soviet Union. She was introduced to tennis by her parents at age 4. She plays right-handed and turned pro in 2000. As of December 28, 2009, she is ranked World No. 31 in singles and World No. 41 in doubles by the Women's Tennis Association. Her career-high rankings in singles and doubles are World No. 29 and World No. 9, respectively.
She pulled off the biggest singles win of her career so far at the 2009 Rogers Cup held in Toronto, Canada, by beating Venus Williams, the third seed at that event, in three sets. She has also defeated Ana Ivanović twice in professional matches, as well as in the 2004 Wimbledon Championships girls final; and Elena Dementieva at the 2009 Toray Pan Pacific Open.