This study examines the compatibility of the Law of Criminal Procedure of 2001 in Saudi Arabia with the international human rights standards, and provides recommendations for criminal procedure reforms. The recent developments in the Saudi Arabian criminal justice system make it important to examine the right to a fair trial within the legal system of Saudi Arabia. This study starts by examining the international human rights standards related to the right to a fair trial and the right to a fair trial under the Saudi Arabian legal system. The study then examines the extent to which Shariah law recognizes the international human rights standards related to the right to a fair trial. This will involve the sources of Shariah and the school of thought in the Islamic jurisprudence as well as the crimes and punishments in Islamic law. The main argument is highlighted in Chapters Four and Five of this research, the former of which study the pre-trial process in the Saudi Law of Criminal Procedure in the light of international human rights standards, and the latter has evaluated the right to a fair trial under Saudi Arabia legal system. Various cases are examined in these two chapters, and the sources of those cases vary in terms of the level; for instance, some of them were provided by the General Court in Riyadh; others were provided by the Supreme Judicial Council; and others were obtained from the Modawanat-Al-Ahkam, which is the publication of the Ministry of Justice containing a variety of cases. Cases in the international domain were brought mainly from the Working Group of Arbitrary Detention in the HRC. The study provides suggestions necessary for the Law of Criminal Procedure in relation to specific articles.