Donna Vekić (born 28 June 1996) is a Croatian professional tennis player and businesswoman. She has won three singles titles on the WTA Tour: the 2014 Malaysian Open, the 2017 Nottingham Open, and the 2021 Courmayeur Ladies Open. She has also won five singles titles and one doubles title on the ITF Circuit. Her best performance at a Grand Slam singles event was reaching the quarterfinals at the 2019 US Open. On 4 November 2019, she achieved a career-high singles ranking of world No. 19.