Serena Williams

Net worth: $300 million. Williams earned $94 million in career prize money — the most in women's tennis history — but her business portfolio dwarfs her on-court earnings. Serena Ventures has invested in 78+ companies including MasterClass, Tonal, and Impossible Foods, with a combined portfolio valuation exceeding $14 billion. She owns stakes in the Miami Dolphins and Inter Miami CF. Her S by Serena fashion line and Nike partnership (lifetime deal) continue to generate revenue. Retired from tennis in 2022 with 23 Grand Slam singles titles — one short of Margaret Court's record, which she'll never stop thinking about.