Daniela Hantuchová (Slovak pronunciation: [ˈdaɲɪ̯ɛla ˈɦantuxɔʋaː]; born 23 April 1983) is a retired Slovak tennis player. She turned professional in 1999 and had her breakthrough year in 2002, when she won her first WTA tournament, the Indian Wells Masters, defeating Martina Hingis in the final and becoming the lowest-ranked player to ever win the tournament. She also reached the quarterfinals of that year's Wimbledon Championships and US Open, ending the year in the top ten. She was part of the Slovak team that won the 2002 Fed Cup and the 2005 Hopman Cup.