Three times. Novak Djokovic won his first Wimbledon men's singles title in 2011, defeating defending champion Rafael Nadal in four sets, 6-4, 6-1, 1-6, 6-3. The native of Serbia claimed his second title in 2014, outlasting seven-time men's champion Roger Federer of Switzerland, 6-7 (7), 6-4, 7-6 (4), 5-7, 6-4. In 2015, his third title was a second consecutive win over Federer, 7-6 (1), 6-7 (10), 6-4, 6-3.
Novak Djokovic has won seven Grand Slam singles titles. Four Australian Open titles, two French Open titles and one US Open titles. He has yet to win a French Open title.
He has also won twenty ATP Masters 1000 titles, eleven ATP Tour 500, six ATP Tour 250 and four Year-End Championships. In total, he has won 48 ATP singles titles as of 2014.
He has won 1 Grand Slam:
Australian open 2008
2 Australian Opens
none, not a single championship
Djokovic has won 29 career singles titles
Men - Novak Djokovic from SerbiaWomen - Maria Sharapova from Russia
Novak Djokovic won the Men's singles, Petra Kvitova won the Women's singles.
Martina Navratilova won 3 singles titles - 1981, 1983, 1985 She also won 7 doubles titles.
He won 7 singles titles, in 1993-1994-1995-1997-1998-1999-2000.
Yes he has won at least one time each grand slam title