This document provides an introduction to the course "Introduction to Public Administration" (PAD202) at the National Open University of Nigeria. It outlines the main contents of the course, which are organized into 3 modules covering various units and topics related to public administration. The first module covers the meaning and concepts of public administration, as well as its evolution and ecology. The second module examines public administration as an art or science and discusses its growth, importance, scope and functions. The third module compares private and public administration and analyzes the relationship between public administration and politics, in addition to various theories of public administration.