Kevin Durant has not officially crossed the billionaire threshold, but he ranks securely among the wealthiest and highest-earning active athletes in global sports history. His massive wealth is propelled by hundreds of millions of dollars in career NBA playing salaries, a lucrative lifetime endorsement agreement with Nike, and an extensive portfolio of successful tech startups and corporate investments managed through his investment firm, Thirty Five Ventures, positioning him near the upper echelon of sports business moguls.