text: who has won the most no. of grand slams in tennis?and how many?navratilova is originally from which country?   margaret smith court, between 1960 and 1975, she won a record 62 grand slam titles – 24 singles, 19 women's doubles and 19 mixed doubles martina navratilova (born october 18, 1956, in prague, czechoslovakia) is a former world no. 1 woman tennis player. originally from czechoslovakia, she defected to the united states in 1975 and became a u.s. citizen in 1981.