The age at which a golfer can turn professional varies depending on the sport’s governing body. Generally, one must be 18 or older to become a professional golfer. The Professional Golfers’ Association (PGA) and Ladies Professional Golf Association (LPGA) require players to be 18 before competing professionally. Other organizations, such as the European Tour, may allow younger players to compete if they have achieved specific play standards or possess exceptional talent. Ultimately, the sport’s governing body determines the age at which a golfer can turn professional.