In a world where corporations wield economic power equal to small countries, the richest companies are often those with the largest influence, workforce, and impact on global markets. From energy giants and retail behemoths to tech titans, these companies report hundreds of billions in annual revenue — a sign of their immense scale and operational dominance.

As of 2025, these are the 10 world richest companiesranked by annual revenue, with the least generating over $300 billion according to the latest global financial data.

These companies did not achieve this status overnight. Some of them were started in garages, parks and with just a desk before blossoming into becoming the leading companies in their field.

1. Walmart (USA) – $685 billion

Established by Sam Walton in 1962, Walmart is a retail American company which operates on a hypermarket scale. It sells a wide variety of merchandise (clothing, food items, beverages, pharmaceuticals, books, home supplies etc) through discount stores, super centers, neighborhood markets, as well as a robust online platform.

Walmart remains the world’s largest company by revenue. With thousands of retail stores and a fast-growing e-commerce division, its consistent performance is fueled by massive global retail demand, particularly in the U.S. and Latin America.

2. Amazon (USA) – $650 billion

Amazon, which started in a garage in 1994 is no longer just an online store – it’s now a multinational technology company focused on e-commerce, cloud computing, digital streaming and artificial intelligence.

It’s continued growth is driven by global e-commerce, Prime subscriptions, and tech infrastructure.

3. Saudi Aramco (Saudi Arabia) – $478 billion

Officially the Saudi Arabian Oil Company, it is a state owned oil and chemicals giant. Saudi Aramco is the world’s largest oil producer and largest exporter of crude oil. Aramco manages Saudi Arabia’s vast hydrocarbon reserves.

High oil prices and global demand continue to boost its revenues.

4. Sinopec Group (China) – $444 billion

Sinopec is China’s state-owned petroleum and petrochemical giant. It is involved in oil exploration, refining, and chemical production, driving enormous revenue from both domestic and export markets.

5. Berkshire Hathaway (USA) – $415 billion

Warren Buffett’s investment conglomerate owns everything from insurance to railroads and consumer brands like Dairy Queen and Duracell. Its diversified holdings make it a revenue-generating machine.

6. UnitedHealth Group (USA) – $410 billion

This healthcare and insurance giant has grown rapidly by combining tech-driven services with traditional health insurance, making it the top player in the U.S. healthcare industry.

7. Apple Inc. (USA) – $400 billion

Apple is a top two most valuable technology company by market valuation. The company is renowned for its innovative products and services, including the iPhone, iPad, Mac, Apple Watch, Apple TV, and various software and online services. 

Apple has a vast global user base with billions of active devices worldwide.

8. Petrochina (China) – $399 billion

PetroChina is the publicly listed arm of China National Petroleum Corporation (CNPC) and leading energy producer and distributor in China, and one of the largest globally by revenue.

PetroChina is involved in the exploration, development, production, refining, transportation, and sale of oil and gas, as well as petrochemical products. 

9. CVS Health (USA) – $378 billion

CVS runs thousands of pharmacies and healthcare clinics across the U.S. It also owns Aetna, a major insurer—making it a dominant force in American healthcare services.

10. Alphabet Inc (USA) – $359 billion

Alphabet Inc, the parent company of search giant Google, is a multinational conglomerate formed in 2015 through a restructuring of Google. Alphabet owns a diverse portfolio of companies across various industries, including technology, healthcare, and biotechnology.

Alphabet’s key businesses include Google’s core internet services like Search, YouTube, and Google Cloud.

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