This chapter aims to describe the evolution of administrative system under globalization pressures in the MENA region. For this reason and for considering the adaptability of public administration in these countries, government performance as a result of administrative system reforms and globalization is analyzed according to six dimensions: (1) government effectiveness, (2) regulation quality, (3) E-government, (4) political stability, (5) corruption control, and (6) general governance. This study uses the panel data approach covering the period 2010–2017 for the MENA countries and employs methods for identifying patterns of behavior. Results indicate that globalization and government performance have a strong and nonlinear relationship and their interactive pattern of behavior is oscillatory. In the interactive relationship between these two variables, administrative system reform activities are mediator variable.