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Technology

Elon Musk – Built PayPal, Tesla, SpaceX, and several other ventures from scratch.

Jeff Bezos – Founded Amazon in his garage; revolutionized e-commerce.

Bill Gates – Co-founded Microsoft; became one of the richest men in the world.

Mark Zuckerberg – Created Facebook while in college.

Larry Page & Sergey Brin – Created Google as a university project.

Michael Dell – Started Dell Computers in his dorm room.

Reed Hastings – Co-founded Netflix and disrupted entertainment.

Business & Investments

Warren Buffett – Self-made through value investing and Berkshire Hathaway.

Ray Dalio – Started Bridgewater Associates from his apartment; one of the largest hedge funds globally.

Carl Icahn – Self-made investor and corporate raider.

Oprah Winfrey – Rose from poverty to become a media mogul and billionaire.

Sara Blakely – Founded Spanx with $5,000 in savings; became the youngest self-made female billionaire.

Startups & New Tech

Brian Chesky & Joe Gebbia – Co-founded Airbnb with minimal startup funds.

Jan Koum – Immigrant who co-founded WhatsApp; sold to Facebook for $19B.

Evan Spiegel – Co-founded Snapchat in college.

Patrick & John Collison – Irish brothers who co-founded Stripe, the payments company.

Industry & Energy

Li Ka-shing – Rose from humble beginnings in Hong Kong to dominate real estate and infrastructure.

Gina Rinehart – Built upon, but massively expanded, a small mining business into a global powerhouse.

Roman Abramovich – Built a fortune in oil and industry after the fall of the Soviet Union.


Would you like me to narrow it down — for example, self-made billionaires under 40, or female self-made billionaires, or from a specific country (like the U.S., China, or Europe)?