Serena Williams has won the most Grand Slam titles of all time during her career , with a total of 23 Grand Slam tournament victories . She pulled clear of Steffi Graf to take the overall lead in the rankings after her success at the 2017 Australian Open , in which she beat her sister , Venus Williams , in the final . Queens of the court Serena Williams is undoubtedly one of the best female tennis players of all time . Of her 23 Grand Slam titles to date , seven each came at the Australian Open and at Wimbledon . Along with her six victories at the U.S. Open and her three French Open titles , she is one of only two female players in the Open Era to have won each of the major tournaments three times or more . The other player to join her in that exclusive club is Steffi Graf , who holds the record for the total number of weeks at No . 1 in the WTA rankings . Can Williams match Navratilova ? While Serena Williams tops the list for most Grand Slam titles , it is Martina Navratilova who holds the record for most singles titles on the WTA circuit . While Serena Williams has won 14 Grand Slam doubles titles with her sister , Venus , Navratilova managed an impressive 31 Grand Slam doubles wins during her career , as well as 177 overall doubles titles . Navratilova won titles with several different partners , but her most successful doubles pairing was with Pam Shriver , with whom she won 21 Grand Slam titles between 1981 and 1989 . Impressively , Navratilova reached the final of the 2003 U.S. Open at the age of 46 , some 13 years after her latest Grand Slam doubles success at the same tournament . In 2003 , however , she lost out in the final with her partner , Svetlana Kuznetsova , marking Navratilova 's last appearance in a Grand Slam doubles final .
