Cassiel Ato Baah Forson is a Ghanaian politician and member of the Seventh Parliament of the Fourth Republic of Ghana and a member of the Eighth Parliament of the Fourth Republic of Ghana representing the Ajumako-Enyan-Esiam Constituency in the Central Region on the ticket of the National Democratic Congress (NDC).In 2013 he served as the deputy minister for Finance.

He is currently the Minority Leader in Parliament of Ghana. Dr. Forson was born on 5 August 1978 and hails from Ajumako Bisease in the Central Region of Ghana. He obtained a PhD in Business and Management (finance option) in September 2020 from the Kwame Nkrumah University of Science and Technology (KNUST) in Ghana. Prior to getting the doctorate, the MP had two master's degrees: A Master of Science in Taxation from the University of Oxford, UK and another Master of Science degree in economics from KNUST. He had his first degree in accounting at the South Bank University in London.

Dr. Forson is a member of the Institute of Chartered Accountants, Ghana and a fellow of Chartered Institute of Taxation.

Dr. Forson is a Ghanaian Legislator, Fiscal Economist, Chartered Accountant, Tax practitioner and Entrepreneur with professional experience spanning two decades in both private and public sectors. He was the managing director of Forson Contracts Limited in the United Kingdom. And he also served as the chief executive officer for Omega Africa Holding Limited.

Dr. Forson is a member of the National Democratic Congress (NDC). He has been the NDC Member of Parliament representative for the Ajumako-Enyan-Esiam constituency since 2009. He is currently the Minority Spokesperson on Finance