Serena Williams has won Grand Slam titles.
Serena Williams . Williams holds the most Grand Slam titles in singles , doubles , and mixed doubles combined amongst active players . Her record of 39 Grand Slam titles puts her third on the all-time list and second in the open era : 23 in singles , 14 in women 's doubles , and 2 in mixed doubles . She has won an all-time record of 13 Grand Slam singles titles on hardcourt .