The first male Grand Slam champion was Fred Perry, and the first female Grand Slam champion was Helen Wills Moody.
Fred Perry: Fred Perry was a British tennis player who achieved the distinction of winning the first-ever Grand Slam in men's tennis history. He accomplished this remarkable feat in 1935. The Grand Slam consists of winning all four major championships in a single calendar year. Perry won the Australian Championships (now known as the Australian Open), the French Championships (now known as the French Open), Wimbledon, and the US National Championships (now known as the US Open) in 1935, cementing his status as one of the sport's great champions.
Helen Wills Moody: Helen Wills Moody, an American tennis player, was the first female Grand Slam champion. She achieved the Grand Slam in women's tennis in 1928. Just like Fred Perry, she won the Australian Championships, the French Championships, Wimbledon, and the US National Championships in a single calendar year. Helen Wills Moody was known for her dominant and graceful playing style and was a dominant force in women's tennis during the 1920s and 1930s.