This document provides an introduction to the academic discipline of public administration. It distinguishes between administrative activity and the study of public administration, noting that while administrative activity is as old as civilization, public administration has only been a formal academic discipline for about 100 years. The document outlines the objectives and expected outcomes of studying public administration. It then discusses how modern public administration differs from ancient and medieval forms in its professionalization, legal framework, and orientation toward public service. The document also notes the increasing complexity of public problems and how this has expanded the role of public administration.