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Grant Thornton Nigeria (previously Spiropoulos Adiele Okpara & Co.), joined as a full member firm of Grant Thornton International Ltd on 1 February 2013. The firm has operated as a Grant Thornton representative in Nigeria for approximately 20 years and has built up a strong reputation. We predominantly offer audit and outsourcing services, but also have tax and advisory capabilities, provided by a team of six partners and 105 staff.

“Being part of the global Grant Thornton network is a great step towards us achieving our ambitions. We are proud of our strong reputation in Nigeria and we look forward to developing our already strong working relationships further.”

Peter N. Orizu, Executive chairman

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Global strength

Grant Thornton is one of the world’s leading organisations of independent assurance, tax and advisory firms. With more than 73,000 Grant Thornton people, across 149 markets, we are focused on making a difference to clients, colleagues and the communities in which we live and work.

Grant Thornton provides solutions that can help mid sized and global companies grow and optimise their operations

Why Grant Thornton

At Grant Thornton Nigeria, we aim to provide solutions rather than just services, through a combination of local knowledge and global resources. Teams work closely together to meet clients’ needs through an innovative approach with a high ratio of partner time on assignments.


Grant Thornton is an award-winning globally recognised professional services network. Here are some of our awards:

Universum Most Attractive Employers 2020
Universum Most Attractive Employers 2020
Universum Top 50 Employer for Diversity & Inclusion 2019
Universum Top 50 Employer for Diversity & Inclusion 2019