The purpose of the article is to comparatively reveal the structure and activity of the ombudsman institute in Kazakhstan and Turkey and evaluate it in terms of international standards. In this context, the compliance of the ombudsman institutions of the two countries with the international documents, which regulate the status of national human rights institutions, was studied. The normative basis of their duties and powers, and international standards, will be examined, and if there are any shortcomings, they will be identified and recommendations will be made on what to do to improve them. In order to protect human rights and freedoms, the importance of the ombudsman institution in the society and its place in the state legal system was analyzed. Additionally, the status of the ombudsman institution, the order of creation and appointment to the position was studied. The requirements and duties of the ombudsmen of the two countries were shown. It was also determined that the norms of the internal legislation of the two states regarding the institution of ombudsman correspond to the principles of Paris and Vienna. In this context, proposals were made to improve internal legislation. To conduct scientific research work, the national laws were studied such as “On the Commissioner for Human Rights of the Republic of Kazakhstan” dated November 5, 2022 and the Law “On the Ombudsman Institute” of Turkey dated June 29, 2012. Result of the research work, some inconsistencies were obtained with international standards in the laws governing the activities of the ombudsman institution.