Africa is home to companies operating at a scale that can rival major corporations anywhere in the world.

The continent's biggest businesses are found across energy, mining, telecommunications, banking, retail, transportation and technology. Some serve hundreds of millions of consumers, while others operate enormous natural-resource businesses.

One important distinction needs to be made before looking at the ranking: largest does not necessarily mean most valuable.

A company can generate enormous revenue while having a relatively modest market valuation. Another company may have lower annual sales but a much higher market capitalisation because investors expect stronger future growth.

For this list, size is primarily considered through revenue, using recent published company and ranking data.

1. Sonatrach, Algeria

Sonatrach is Algeria's state-owned energy giant and one of Africa's biggest companies.

The company operates across oil and gas exploration, production, transportation, refining and petrochemicals.

Recent 2026 company rankings put Sonatrach's revenue at approximately $75 billion, making it the largest African company by revenue in that ranking.

Its importance extends beyond corporate performance because energy exports are central to Algeria's economy.

2. NNPC, Nigeria

Nigeria's national oil company is another enormous African enterprise.

The Nigerian National Petroleum Company operates across the country's oil and gas value chain.

A recent 2026 ranking places NNPC's revenue at approximately $31.2 billion.

Its scale reflects the importance of petroleum to Nigeria's economy.

3. Naspers, South Africa

Naspers is one of the continent's most internationally connected companies.

The South African group has substantial exposure to technology, internet businesses and global investments.

Recent rankings place its revenue at around $31.9 billion, while its market capitalisation is also among Africa's largest.

Unlike traditional resource companies, Naspers demonstrates how African corporations can build significant value through global technology investments.

4. Vivo Energy

Vivo Energy has built a large African downstream energy business.

The company is involved in the distribution and marketing of fuels and related products across multiple African markets.

Recent rankings put its revenue at approximately $26 billion.

Its multinational structure gives it a presence far beyond a single domestic market.

5. Sonangol, Angola

Angola's state-owned oil company is another major player in Africa's energy sector.

Sonangol is involved in petroleum exploration, production and related activities.

Recent estimates place its revenue around $21 billion.

The company's size reflects Angola's importance as an oil-producing country.

6. Eskom, South Africa

Eskom is South Africa's state-owned electricity utility.

Its business is fundamentally different from companies such as Naspers or Sonatrach because its primary role is supplying electricity rather than selling consumer products internationally.

Nevertheless, its financial scale is enormous.

A recent company ranking places its revenue at approximately $18.5 billion.

Eskom has also undergone significant operational changes. In 2026, Reuters reported that the utility more than doubled annual net profit to R30.3 billion and experienced dramatically fewer rolling blackouts than in 2024.

7. MTN Group, South Africa

MTN is one of Africa's largest telecommunications groups.

The company operates across multiple African markets and provides mobile communications, data and financial services.

Telecommunications businesses have become increasingly important as African consumers move from traditional voice services toward smartphones, mobile data and digital payments.

MTN's large geographic footprint gives it exposure to several fast-growing consumer markets.

8. Shoprite, South Africa

Shoprite is one of Africa's largest retail groups.

Its supermarket and convenience operations serve consumers across multiple African markets

Shoprite reported total sales of R270.8 billion for the financial year ending June 28, 2026, according to Reuters, with its core South African supermarket business accounting for R228.7 billion.

9. Ethiopian Airlines, Ethiopia

Ethiopian Airlines is one of the continent's most important aviation businesses.

Its extensive international network connects Ethiopia with destinations across Africa, Asia, Europe, the Middle East and the Americas.

The airline's position demonstrates how transportation companies can become major African multinational businesses.

Recent company rankings have placed Ethiopian Airlines among the continent's largest businesses by revenue.

10. Vodacom Group, South Africa

Vodacom is another major African telecommunications company.

Its operations span several countries and cover mobile communications, data and financial services.

The company's importance comes from the scale of Africa's mobile economy. Mobile phones are increasingly the primary gateway to banking, commerce, entertainment and digital services for millions of consumers.

Why Energy Dominates Africa's Largest Companies

The list reveals something important about Africa's corporate economy.

Energy remains extremely powerful.

Sonatrach, NNPC and Sonangol generate enormous revenues because oil and gas are high-value commodities traded at large scale.

But the picture is changing.

Telecommunications companies such as MTN and Vodacom have built continental networks.

Retail companies such as Shoprite benefit from urbanisation and rising consumer demand.

Largest Is Not the Same as Most Valuable

This distinction matters if you are researching African companies for investment or business purposes.

Revenue measures the money a company generates from its operations.

Market capitalisation measures what investors collectively value a publicly traded company at.

The two numbers can be dramatically different.

For example, African Business's 2025 Top 250 ranking shows Naspers at the top of the continent's listed companies by market value, at about $40.4 billion at the end of March 2025.

That is why a “largest companies” ranking and a “most valuable companies” ranking should not simply be combined.

They answer different questions.

Africa's biggest companies increasingly reflect the continent's changing economy: natural resources still matter enormously, but telecommunications, retail, financial services and technology are becoming increasingly important.

The companies that dominate the next decade may therefore look quite different from those that dominated the previous one.