NMB Bank Chief Executive Officer (CEO) Ruth Zaipuna has been featured on Africa.com’s 2023 Definitive List of Women Chief Executive Officers (CEOs) ranking in the 13th position in the list of 93 women representing 17 countries who qualified based on either large scale revenue or large scale market capitalization.
Zaipuna is the only Tanzania Woman CEO featured on the list and among 8 East African women CEOs on the list released this week.
Other 7 East African women CEOs on the list include Jane Karuku, Group Managing Director & CEO, East African Breweries, Anne Juuko, CEO, Stanbic Bank Uganda, Brenda Mbathi, President, East Africa, General Electric Company, Nasim Devji, Group CEO & Managing Director, Diamond Trust, Mapula Bodibe, CEO, MTN Rwandacell Plc and Annastacia Kimtai, Managing Director, KCB Bank Kenya Ltd.
The third annual Africa.com Definitive List of Women CEOs sponsored by Standard Bank Group, was revealed on April 19, 2023 during a virtual event. No other list of African business women running big businesses is grounded in this type of quantifiable research. The list is unique in that it is based on data-driven research, with data provided by Bloomberg.
“This year’s list of 93 women represents 17 countries who have qualified based on either large scale revenue or large scale market capitalization. The list includes 40 women from South Africa, 12 from Nigeria, and 6 from Egypt, Ghana and Kenya respectively,” said Teresa Clarke, Chair of Africa.com.
Africa.com analyzed 2,020 companies listed on the 24 African stock exchanges. Of the 2,020 companies, Africa.com screened for those companies with revenue of $100 million or more, or a market cap of $150 million USD or more, which yielded a list of 787 companies.

The public websites of all 787 companies were examined to identify female C-suite executives. The team then researched each woman to determine those who have a title of chief executive officer or managing director or president AND conducted a review to confirm that these executives have bottom line, profit and loss responsibility for the companies. This resulted in 40 women CEOs on group 1.
The methodology for group 2 is identical to the methodology for Group 1, except that the entities evaluated were the divisions of the 787 companies, such that the divisions themselves have standalone revenue of $100 million USD or more. The women running these divisions must have a title that clearly demonstrates that they are the chief executive with profit and loss responsibility for the division. This analysis yielded 28 women division heads.
Group 3 started with an analysis of global corporations with revenue over $10 billion USD who have operations in one or more countries on the African continent. The regional heads of these companies were analyzed to identify women executives for an Africa region or an African country, with profit and loss responsibility for the country or region. This analysis yielded 25 women. Women in this group are ranked by prioritizing those who run the Africa region ahead of those who run a single African country.

The three groups make up the final Definitive List of 93 women listed below.
15 women from Group I are included here.
GROUP I
1. Natascha Viljoen, CEO, Anglo American Plc
Johannesburg Stock Exchange
$41.6 billion USD Revenue
South Africa
2. Nompumelelo Zikalala, CEO, Kumba Iron Ore Ltd
Johannesburg Stock Exchange
$6.9 billion USD Revenue
South Africa
3. Mpumi Madisa, CEO, Bidvest Group
Johannesburg Stock Exchange
$6.6 billion USD Revenue
South Africa
4. Bertina Engelbrecht, CEO, Clicks Group Ltd
Johannesburg Stock Exchange
$2.6 billion USD Revenue
South Africa
5. Dr Nombasa Tsengwa, CEO, Exxaro Resources
Johannesburg Stock Exchange
$2.2 billion USD Revenue
South Africa
6. Albertinah Kekana, CEO, Royal Bafokeng Holdings
Johannesburg Stock Exchange
$1.1 billion USD Revenue
South Africa
7. Miriam Chidiebele Olusanya, Managing Director, Guaranty Trust Holding Company
Nigeria Stock Exchange
$1.1 billion USD Revenue
Nigeria
8. Jane Karuku, Group Managing Director&CEO, East African Breweries
Nairobi Stock Exchange
$970 million USD Revenue
Kenya
9. Ntombi Felicia Msiza, CEO, Raubex Group Ltd
Johannesburg Stock Exchange
$781 million USD Revenue
South Africa
10. Nneka Onyeali-Ikpe, Managing Director&CEO, Fidelity Bank
Nigerian Stock Exchange
$600 million USD Revenue
Nigeria
11. Zanele Matlala, CEO, Merafe Resources
Johannesburg Stock Exchange
$546 million USD Revenue
South Africa
12. Ramasela Ganda, Group CEO, Zeda Ltd
Johannesburg Stock Exchange
$518 million USD Revenue
South Africa
13. Ruth Zaipuna, CEO, NMB Bank Plc,
Dar es Salaam Stock Exchange
$485 million USD Revenue
Tanzania
14. Nasim Devji, Group CEO&Managing Director
Diamond Trust
Nairobi Stock Exchange
$370 million USD Revenue
Kenya
15. Dr Hend El Sherbini, Group CEO, Integrated Diagnostics Holdings
Egypt Stock Exchange
$333 million USD Revenue
Egypt