It's Steffi Graf - she has won 22 Grand Slam singles titles, including the Golden Slam (all four Grand Slams in a year + the Olympic Gold Medal in singles, in 1988). Martina Navaratilova has won the most number of doubles Grand Slam titles. She is also the leading winner of overall Grand Slam titles.
er - women do not play men's tennis
14 Grand slam men's singles titles
Margaret Court, she won 24 Grand Slams in her life.
German female tennis player Steffi Graf has 22 Grand Slam titles in her name.
Jelena Ostapenko is the youngest women to win a grand slam at the 2017 French Open.