A juvenile delinquent has, under Omani law, a number of protection procedures during their criminal proceedings in order to protect them from negative psychological influences. However, this protection remains theoretical as long as it is not applied. Thus, this study aims to show the theoretical aspects of procedural protection for juvenile delinquent at the different stages of the criminal proceedings as stipulated by Omani law and explores the application of this protection according to field interviews and scientific experience acquired by the researcher. The study allowed the researcher to recommend legal and practical solutions for the lacunae in this area that hinder the application process. The research problem was to determine the extent of comprehensiveness of the legal provisions in Omani legislation to cover all aspects of procedural protection of juvenile delinquents and to discover the extent of compatibility between theoretical legislations and the practical application of procedural protection of juvenile delinquent criminal proceedings in Oman. The research methodology included inductive, analytical and comparative strategies as well as three chapters about the procedural protection for juvenile delinquent criminal proceedings starting from the stage of collecting evidence, followed by a primary investigation and ending with the trial stage. The results of this study concluded that Omani legislation has a legal lacuna from both theoretical and application aspects which has to be resolved by the correction of legal procedures and practical actions to achieve total procedural protection for juvenile delinquents to ensure a fair trial.