As of my last update, the male tennis player who has won the most Grand Slam titles is Roger Federer. He has accumulated an impressive 20 Grand Slam singles titles, which is the most by any male player in the history of tennis. Federer's Grand Slam victories include a record 8 Wimbledon championships, as well as numerous titles at the US Open, the Australian Open, and the French Open. read more >>

Roger Federer has won 20 Major singles titles, 8 of them at Wimbledon - the most by any man in history. Don Budge is the only male player in tennis history to have won six consecutive Grand Slam singles titles, from Wimbledon 1937 to U.S. Championships 1938.read more >>