John Herbert Crawford, was an Australian tennis player during the 1930s. He was the World No. 1 amateur for 1933, during which year he won the Australian Open, the French Open, and Wimbledon, and was runner-up at the U.S. Open in five sets, thus missing the Grand Slam by one set that year. He also won the Australian Open in 1931, 1932, and 1935. He was inducted into the International Tennis Hall of Fame in 1979.

The Grand Slam in tennis is the achievement of winning all four major championships in one discipline in a calendar year. In doubles, a Grand Slam may be achieved as a team or as an individual with different partners. Winning all four major championships consecutively but not within the same calendar year is referred to as a "non-calendar-year Grand Slam", while winning the four majors at any point during the course of a career is known as a "Career Grand Slam".