Polona Hercog (born 20 January 1991) is a Sloveniantennis player. Her career-high WTA rankings are No. 35 in singles and No. 56 in doubles. She has won five WTA Tour titles; three in singles and two in doubles. Hercog also enjoyed success on the ITF Women's Circuit, winning 14 singles and five doubles titles. She is the Slovenian No. 2 in women's tennis.