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 . She is the most recent female player to have held all four Grand Slam singles titles simultaneously ( 2002 -- 03 and 2014 -- 15 ) and the third player to achieve this record twice after Rod Laver and Steffi Graf . She is also the most recent player , together with her sister Venus Williams , to have held all four Grand Slam women 's doubles titles simultaneously ( 2009 -- 10 ) . She has won an all-time record of 13 Grand Slam singles titles on hardcourt .