Land expropriation is treated in many countries all over the world as the classic legal norm. Acccording to this rule, government has power to acquire private real estates only in order to provide land for realisation the significant public purposes. The compulsory purchase ought to be legitimate and the process in which property is taken over should be clearly identified in legislation. Owners, whose property is taken by government for public use, are entitled to be paid adequate compensation. It is constitutionally ensured and is one of the fundamental principles within a rule of law. The studies presented in this monograph entitled Some aspects of compulsory purchase of land for public purposes make a part of the theoretical and practical studies on compulsory purchase as a tool for the acquisition of land carried out by the scientists from Poland and other countries. The source materials which constituted the basis for this publication were prepared in the framework of the cooperation between Authors and studies were inspired by FIG/FAO International Seminar on Compulsory Purchase in Helsinki, Finland in September 2007, FIG working week in Stockholm, Sweden in June 2008, and the FIG/FAO International Seminar or State and Public Land Management in Verona, Italy September 2008. At the beginning, scientists from three Universities participated in these studies – Norwegian University of Life Science in Aas, The Leibniz University in Hannover and The University of Warmia and Mazury in Olsztyn. Afterwards, researches from other units decided to join us. They represent University of Economics in Poznań and Katowice, University of Ljubliana and School of Government, University of North Carolina