The 10 largest companies on Earth by total annual revenue, ranked from the 2025 Fortune Global 500.
Quick answer: 1. Walmart, 2. Amazon, 3. State Grid, 4. Saudi Aramco, 5. China National Petroleum, 6. Sinopec Group, 7. UnitedHealth Group, 8. Apple, 9. CVS Health, 10. Berkshire Hathaway.
Revenue is the rawest measure of corporate scale: how much money flows through a company in a year before any costs are subtracted. On that yardstick, the world's biggest firms are a mix of American retail and tech giants and Chinese and Middle Eastern energy behemoths. Walmart has topped the global ranking for more than a decade, and the ten largest companies together booked roughly $4.7 trillion in a single fiscal year. This list uses the 2025 Fortune Global 500, which ranks companies worldwide by total revenue for fiscal years ended on or before March 31, 2025. Every figure below traces to Fortune's ranking and, where noted, is corroborated by the company's own annual report.
The American retail giant has topped the Fortune Global 500 for 12 straight years. Its fiscal 2025 total revenue of roughly $681 billion is larger than the GDP of most countries.
Amazon combines the world's largest e-commerce marketplace with the dominant cloud-computing business (AWS). Its 2024 revenue of about $638 billion put it second globally.
China's state-owned electricity distributor is the largest utility on Earth, serving over a billion people. It is the highest-ranked non-U.S. company on the list.
The Saudi state oil company is the most profitable firm on the entire list, netting about $105 billion. Its revenue of roughly $480 billion places it fourth by sales.
The state-owned parent of PetroChina is China's largest oil and gas producer. It booked about $413 billion in 2024 revenue, fifth in the world.
China Petrochemical Corporation, known as Sinopec, is one of the world's largest oil refiners and petrochemical producers. Its 2024 revenue was roughly $408 billion.
America's largest health-care company spans insurance (UnitedHealthcare) and health services (Optum). Its roughly $400 billion in 2024 revenue makes it the biggest health-care firm on the list.
The world's most valuable technology company by market cap ranks eighth by revenue, with fiscal 2024 net sales of about $391 billion driven by the iPhone and a growing services business.
CVS Health combines the largest U.S. pharmacy chain with the Aetna health insurer and Caremark pharmacy-benefits business, generating about $373 billion in 2024 revenue.
Warren Buffett's conglomerate spans insurance, railroads, energy and consumer brands. Its roughly $371 billion in 2024 revenue rounds out the global top ten.
| # | Name | country | industry | fiscal_year | employees |
|---|---|---|---|---|---|
| 1 | Walmart | United States | Retail | FY ended Jan 31, 2025 | 2,100,000 |
| 2 | Amazon | United States | Internet services & retailing | FY 2024 | 1,556,000 |
| 3 | State Grid | China | Energy (utilities) | FY 2024 | 1,361,423 |
| 4 | Saudi Aramco | Saudi Arabia | Energy (petroleum) | FY 2024 | 76,418 |
| 5 | China National Petroleum | China | Energy (petroleum) | FY 2024 | 1,082,927 |
| 6 | Sinopec Group | China | Energy (petroleum) | FY 2024 | 512,616 |
| 7 | UnitedHealth Group | United States | Health care | FY 2024 | 400,000 |
| 8 | Apple | United States | Technology | FY ended Sep 28, 2024 | 164,000 |
| 9 | CVS Health | United States | Health care | FY 2024 | 300,000 |
| 10 | Berkshire Hathaway | United States | Financials | FY 2024 | 392,400 |
Companies are ranked by total annual revenue in U.S. dollars as reported in the 2025 edition of the Fortune Global 500, which covers each company's fiscal year ended on or before March 31, 2025 (fiscal 2024 for most, fiscal year ended January 31, 2025 for Walmart, and the fiscal year ended September 28, 2024 for Apple). Inclusion is global and all-sector: any publicly available company that files financial statements is eligible regardless of country or industry. Revenue is total company revenue as Fortune tabulates it, not profit or market capitalization. Anchor figures for Walmart and Apple were cross-checked against their SEC Form 10-K filings.
The 2025 edition of the Fortune Global 500, released July 29, 2025, which ranks the world's largest companies by total revenue for fiscal years ended on or before March 31, 2025.
No. This list ranks by annual revenue (total sales), not by market capitalization or profit. By market value the leaders would look very different, topped by companies like Apple, Microsoft and Nvidia. Saudi Aramco is also the most profitable company here despite ranking fourth by revenue.
State Grid, China National Petroleum and Sinopec are enormous state-owned enterprises that supply energy to the world's most populous country, so they move vast volumes of electricity, oil and gas, which translates into some of the largest revenue totals on the planet.
The ten largest companies booked roughly $4.7 trillion in combined annual revenue, out of $41.7 trillion generated by all 500 companies on the 2025 Fortune Global 500 list.