The study aims to The study aims to demonstrate the importance of the audit and oversight function, as it often serves parties that have an important role in corporate governance, and in order to activate the role of audit in the application of corporate governance, international auditing standards have been developed, as well as assurance standards for the purpose of adding value to the company, so the study aimed to know the extent The responsibility of the auditor for the application of International Standard No. (300) (planning to audit financial statements) and its impact on corporate governance, as the importance of governance is based on providing all the important ingredients to protect investors’ funds and ensure that they obtain appropriate returns and not to use or exploit their funds by management or managers For the purpose of achieving personal immunity or using it in investments and unsafe areas, this is through a set of procedures, controls, and accounting and control standards. This view is based on achieving transparency. The study also aimed to know the role played by international auditing standards in dedicating governance and establishing its principles to reduce the phenomenon of corruption, especially after international financial collapses, through the use of the experiences of some developed and developing countries. For the purpose of achieving the objectives of the study, a questionnaire was designed and distributed to the study sample. The descriptive analytical method was used to describe the study variables, analyze them and test their hypotheses through the statistical program (SPSS) to analyze the data.