Thomas Ashaley Thompson-Aryee is the Director-General of the Internal Audit Agency. He was the Deputy Director-General in charge of Finance, Administration and Support Services (FASS) of the Internal Audit Agency from January, 2013 until 17th April, 2025.

Thomas is a Chartered Accountant with over 22 years post-qualification experience and a Fellow of the Institute of Chartered Accountants’ Ghana (ICAG). He has experience in Internal Auditing, Public Financial Management and Institutional Capacity Development. His skills include developing financial policies, setting up functional professional Internal Audit Units and providing consultancy services in the areas of governance, enterprise risk management and internal controls.

Thomas was engaged as the Director of Operations of the Internal Audit Agency in 2006. Prior to that, he worked with the Customs Division of the GRA in the Internal Audit Directorate and with SCOA Motors Ltd as an Accounts Officer. As Director of Operations of the Internal Audit Agency, Thomas led various teams both within and outside of the Agency to assess the status of internal audit practice and implement a framework for the professional practice of internal audit in the public sector. The framework includes quality assurance review procedures as well as methods to determine the status of implementation of audit recommendations by Heads of covered entities.

Thomas led a team of internal audit professionals to South Africa in 2006 to provide a country presentation on internal audit practice in Ghana, organized by the Inwet Institute of Germany. He was the team lead that facilitated the development of enterprise risk management framework for public institutions of Botswana, organized by the Commonwealth in 2008. He also led a team to Edmonton, Alberta-Canada in 2011 for job shadowing in enterprise risk management.

He made a presentation on the theme “Risk Management in the Public Sector, the Role of Internal Auditing” during the 2008 Annual Internal Audi Forum which led to the issuance of a directive by the Government to public institutions to embed enterprise risk management in their operations.

Thomas worked with various consultants to assess and evaluate the performance of District Assemblies across the country under the District Assembly Performance Assessment by the Government to determine the allocation of the District Assembly Common Fund between 2012–2016.

He is a member of the ICAG, Project Management Institute (PMI) and the Institute of Internal Auditors (IIA). Thomas holds an MBA in Strategic and Project Management from the Paris Graduate School of Management as well as an accreditation in Quality Assessment/Validation from the Institute of Internal Auditors (Global).