The purpose of this thesis paper is to analyze legal norms which are governing the general legal regime administrative contracts in Croatia, according to the Law of general administrative procedure, and then establish how are they similar with legal norms, which are governing the administrative contracts in comparative law, and point out certain imperfections in the legal regulation. Also, then will be considered specific examples of incompatibilitys specific regulations, which are governing the administrative contracts with the general legal regime. Therefore, after introductory general remark, first will be analyzed term and characteristics of administrative contracts, then attention will be paid to comparative law, more precisely of administrative contracts according to German and French legislation. After that will be given a brief review on administrative contracts in Croatian legal theory, and the most important part of the work refers to general legal regulation in Croatia, respectively analyzes parties of the administrative contracts, subject of contracts and conditions for its conclusion, implementation and breach of contract, their invalidity, the possibility of modification, right of unilateral cancellation of the contract, and legal protection. Crucial attention is dedicated to administrative contracts in specific legislation, precisely concession contracts, public procurement contracts, and contracts in area of General tax law, focusing on their characteristics of administrative contracts. In the concluding observations author sums up complete work and gives his opinion about legal regulation of administrative contracts in Croatia, and possible changes of the same.