The book "Enlargement of the European Administrative Space" offers a comprehensive analysis of the expansion of the European Administrative Space (EAS). It examines current developments in research and provides comparative studies on administrative reforms in various Southeast European countries. The content is based on the teaching and research activities of the Jean Monnet Chair 'Ad Personam' Lucica Matei and presents new contributions from a variety of researchers and professionals from EU member and candidate states. The work is aligned with current trends in administrative education and research and is aimed at students of public administration at the bachelor's, master's, and doctoral levels, as well as professionals involved in the design and implementation of administrative reforms.