The aim of this paper is to elaborate in detail the forms of legal protection of parties in an administrative dispute and to point out their importance, both in legal provisions and in practice. First, the paper deals with development of parties' rights in administrative dispute, points out the novelties in Croatian legislation resulting from the adoption of new Administration Dispute Act, and brings attention to the improvement of the parties' position in administrative adjudication process as a consequence of adoption of the new Act. Then, the principles of administrative dispute are analysed as fundamental forms of protection of parties’ rights. Further considered are impacts of Convention law on the protection of parties' rights in an administrative dispute. Furthermore, legal remedies in an administrative dispute are discussed - an appeal as the only regular legal remedy, as well as the renewal of a dispute and a request for an extraordinary review of legality of a final judgment as an extraordinary legal remedy. Special attention is paid to cases in which above-mentioned legal remedies can be asked for, their legal effects and actions, as well as powers of administrative courts in relation to the mentioned legal remedies. The paper also analyses the cases in which a party, if denied the right guaranteed by the Constitution of the Republic of Croatia, and the posibillity of initiating a dispute before the European Court of Human Rights in Strasbourg.