The disciplinary liability of a lawyer is one of the most important topics that many legislations are keen to regulate. This significance was formed from its impact on the legal profession as one of the justice pillars that practiced by individuals who enjoy complete freedom and independence to practice their profession. However, this freedom is a double-edged sword, as the practitioner may violate the ethics of the profession by neglecting his duties and degrading the honor of the lawyer. As a result, there was a need to maintain a balance between enabling the lawyer to perform the duties of the defense on the one hand, and preserving the requirements of the profession on the other hand. This can be achieved by establishing a comprehensive disciplinary system to determine lawyer practices without violating the ethics and traditions of the profession, in addition to disciplinary accountability in the event that the lawyer commits a violation. Therefore, this study analyzes the provisions of the Omani legislation related to the disciplinary responsibility of the lawyer compared to the Egyptian legislation. The study follows the comparative and analysis methodology to highlight the similarities and differences between the two legislations. The study reveals the absence of the Omani legislation to organize important issues in the disciplinary accountability of the lawyer, whether those related to the elements of discipline or the procedures and guarantees. Moreover, the study generates a set of recommendations to amend the Omani legislation regarding the disciplinary liability. The study was divided into two chapters: First chapter explores the elements of the Lawyer's Disciplinary Responsibility. The second chapter examines the disciplinary accountability procedures for lawyers and their guarantees.