Discover the top 10 biggest companies in the world by revenue in 2026, however, the bold question is, what is the biggest company in the world? The answer depends on what we mean by “biggest.” Apple, Microsoft and Nvidia may dominate conversations about stock-market value, but ranking companies by annual revenue produces a very different list.
In 2026, there is also a new number one. Amazon has overtaken Walmart to become the world’s largest company by revenue on the 2026 Fortune Global 500, ending Walmart’s 12-year run at the top of the global ranking.
The 500 companies on the list generated a staggering $43.1 trillion in combined revenue in 2025. Here are the ten biggest.
Top 10 Biggest Companies in the World by Revenue
| Rank | Company | Country | Major Industry |
|---|---|---|---|
| 1 | Amazon | United States | E-commerce/Technology |
| 2 | Walmart | United States | Retail |
| 3 | State Grid | China | Electricity/Utilities |
| 4 | UnitedHealth Group | United States | Healthcare |
| 5 | Saudi Aramco | Saudi Arabia | Oil & Gas |
| 6 | Apple | United States | Technology |
| 7 | McKesson | United States | Healthcare |
| 8 | Alphabet | United States | Technology |
| 9 | CVS Health | United States | Healthcare |
| 10 | China National Petroleum | China | Oil & Gas |
10. China National Petroleum
China National Petroleum Corporation, or CNPC, is one of the world’s largest energy companies.
Its enormous scale reflects China’s vast demand for energy.
The company operates across oil and natural gas exploration, production, refining and related businesses.
Its presence in the global top ten demonstrates that despite the rapid growth of renewable energy, traditional oil and gas remain enormous businesses.
9. CVS Health
CVS Health is much more than the pharmacy stores familiar to American consumers.
The company has expanded across healthcare services, pharmacy benefits and insurance-related operations.
That diversification has turned CVS into one of the world’s largest corporations by revenue.
Its position also highlights how enormous healthcare spending has become in the United States.
8. Alphabet
Alphabet is Google’s parent company.
Its empire includes Google Search, YouTube, Android, Google Cloud and numerous technology investments.
Advertising remains central to its business, but cloud computing and artificial intelligence have become increasingly important.
Alphabet’s appearance in the top ten shows just how large digital businesses have become compared with traditional industrial giants.
7. McKesson
McKesson may not be as recognizable to consumers as Amazon or Apple, but its scale is enormous.
The company is a major distributor of pharmaceuticals and healthcare products.
It plays a crucial role in the healthcare supply chain, helping move medicines and medical products through an enormous distribution network.
In 2026, McKesson broke into the top ten of Fortune’s Global 500.
6. Apple
Apple is one of the world’s most recognizable companies.
Its products include the iPhone, Mac, iPad, Apple Watch and AirPods, while its services business includes the App Store, Apple Music, iCloud and other digital offerings.
Apple is particularly remarkable because it combines enormous revenue with exceptionally high profitability and market value.
It doesn’t need to be number one in revenue to remain one of the world’s most financially powerful corporations.
5. Saudi Aramco
Saudi Aramco is the giant at the center of Saudi Arabia’s oil industry.
Its vast oil reserves and production capacity make it one of the most strategically important companies in the global energy market.
Energy prices can cause Aramco’s revenue and profits to fluctuate substantially from year to year.
Nevertheless, its scale keeps it firmly among the largest companies on earth.
4. UnitedHealth Group
UnitedHealth Group has grown into an enormous healthcare business.
Its operations include health insurance and healthcare services.
The company’s size demonstrates the extraordinary financial scale of the American healthcare industry.
UnitedHealth ranks fourth globally by revenue on Fortune’s 2026 Global 500.
3. State Grid
State Grid Corporation of China operates a huge portion of China’s electricity infrastructure.
Electric utilities may attract less consumer attention than smartphones and social media platforms, but providing power to hundreds of millions of people generates extraordinary economic scale.
State Grid’s position at number three makes it one of the largest enterprises anywhere in the world.
2. Walmart
For years, Walmart was almost synonymous with the title “world’s biggest company.”
Its vast retail network and enormous grocery business generate hundreds of billions of dollars in annual sales.
Walmart had occupied the number-one position on Fortune’s Global 500 for 12 consecutive years.
In 2026, that run ended.
But falling to second place hardly makes Walmart small. It remains one of the largest employers and retailers on earth.
1. Amazon
Amazon is now the world’s biggest company by revenue according to Fortune’s 2026 Global 500.
That is a historic change. Amazon started as an online bookstore in the 1990s and developed into an empire spanning:
- E-commerce
- Cloud computing
- Advertising
- Streaming
- Logistics
- Devices
- Artificial intelligence
- Subscription services
Amazon Web Services is especially important because cloud computing provides a high-margin complement to Amazon’s enormous retail operation.
The company’s rise to number one illustrates one of the biggest changes in the modern economy: technology companies are no longer simply high-growth businesses. Some have reached a scale comparable to — or greater than — the world’s largest traditional retailers and energy companies. There is no wonder, it is founded by Jeff Bezos, who is the 4th richest on the list top 10 richest people in. the world 2026.
How Large Are the Fortune Global 500 Companies?
Fortune reports that its 2026 Global 500 companies generated approximately $43.1 trillion in revenue during 2025.
They also:
- Employed approximately 70.2 million people
- Generated about $3.39 trillion in profit
- Produced combined revenue equivalent to more than one-third of global GDP
That gives an indication of how much economic power is concentrated in the world’s largest corporations.
Revenue vs. Market Capitalization
This distinction is important.
The world’s largest company by revenue is not necessarily the world’s most valuable publicly traded company.
Revenue measures how much money flows into a business from its operations.
Market capitalization measures what investors believe the company’s equity is worth on the stock market.
A retailer can therefore generate more revenue than a software company while having a much lower market value.
When TopMost10 ranks “biggest companies,” we specify the metric so readers know exactly what is being compared.
Why Healthcare Companies Rank So Highly
Three companies in the global top ten have major healthcare operations:
- UnitedHealth Group
- McKesson
- CVS Health
Healthcare involves enormous spending on insurance, pharmaceuticals, hospitals, medical products and services.
Companies processing or distributing these expenditures can consequently generate extraordinary revenues even if their names are less famous globally.
Is Technology Taking Over the Global 500?
Technology’s influence is clearly increasing. Amazon is number one. Apple and Alphabet are also in the top ten. Fortune additionally reported major ranking gains for Nvidia and Taiwan Semiconductor Manufacturing Company as the AI boom increased demand for semiconductors.
This suggests that future Global 500 rankings could become even more technology-heavy.
Conclusion
The world’s biggest companies reveal how the global economy is changing. Retail, energy and healthcare remain enormous industries, but technology is moving rapidly upward. Amazon’s rise to number one in 2026 is symbolic of that transformation. After Walmart dominated Fortune’s Global 500 for 12 years, an e-commerce and cloud-computing company has finally taken the crown.
Frequently Asked Questions
What is the biggest company in the world by revenue in 2026?
Amazon ranks number one on the 2026 Fortune Global 500.
What company did Amazon overtake?
Amazon overtook Walmart.
Is Apple the biggest company in the world?
Not by revenue. Apple ranks sixth on the 2026 Fortune Global 500, although it is among the world’s most valuable brands and publicly traded companies.
What is the biggest Chinese company by revenue?
State Grid ranks third globally and is the highest-ranked Chinese company on the 2026 Fortune Global 500.
What is the biggest African company?
That requires a separate regional ranking because no African company appears in this global top ten.