A tycoon is a wealthy, powerful businessperson who has built or controls a major company or industry. The word suggests someone who has shaped entire markets and changed how business works through their vision and influence.

When people call someone a tycoon, they mean someone whose impact extends far beyond personal wealth. A railroad tycoon in the 1800s like Cornelius Vanderbilt built transportation networks that connected the whole country. A shipping tycoon controls fleets of cargo vessels. A media tycoon might own television networks, newspapers, and streaming services. These individuals make decisions that affect thousands of employees and millions of customers.

Tycoons often start with a clever idea or see an opportunity others miss, then work relentlessly to build something massive. John D. Rockefeller became an oil tycoon by creating Standard Oil. Today, you might read about tech tycoons who founded social media companies or online stores. The word carries a sense of ambition, power, and achievement, though it can also suggest someone who cares more about building empires than about the people affected by their decisions.