It is a fundamental necessity to carry out the requirements of ethical management that would enhance the morality level of public management in order to deliver value oriented public services. Today, management frameworks such as “ethical infrastructure” or “public integrity strategy” identified and suggested by OECD provide countries valuable guiding support to overcome today’s public management problems through the vision they give us. However, by considering the “cultural” dimension of ethics management, bringing the ancient knowledge available in countries’ cultural resources to daylight, would help countries prove the consistency of international approaches aiming at finding solutions to their ethical problems of public managements at local levels; and develop best practise management models. “Siyasetname” is the masterpiece work of Nizamülmülk, the Vizier of Great Seljuk State. It is one of our valuable ancient knowledge resources and guides today’s and tomorrow’s people in terms of identifying and establishing the cultural foundations of ethics management requirements. It makes contributions in development of new understanding to strengthen the ethical managements through the essentials and recommendations on “good management” it includes. Despite the institutional and conceptual evolutions in today’s world, Siyasetname still includes recommendations corresponding to the management frameworks developed by OECD in general. Thus, the purpose of this paper is to raise awareness about the management recommendations of Nizamülmülk’s Siyasetname, which has a privileged position among our rich cultural resources, regarding to ethics management in public sector.