This paper is a study on Understanding Ethics and Accountability in Post-Colonial Africa. By implication, the political structure of Post-Colonial Africa at independence was permissive of exploitation of the masses by the leaders. This had remained for decades after independence, with political and other offices becoming gateways to treasury looting. Rather than encourage and promote ethical values, accountability respect for the rule of law and patriotism, the post-colonial structures enhances had leadership, misguided governance and mismanagement of resources. It is on this note that the paper asserts that for there to be purposive development in 21st century Africa, the political terrain has to be of ethical standards, uncompromising stance on accountability, responsibility and transparency as well as strengthening good governance best measures to rescue post-colonial Africa in the mission to greatness.