This article will show how to compare the institution of polish Ombudsman and Ombudsman of Argentina, according to the Constitution and effective law. What is more, the paper will attempt to substantiate by analyzing some of specific features of specialized Ombudsman, both in Poland and Argentina. In addition, it will describe Ombudsman’s abilities and responsibilities and will show how the Ombudsman is elected. Moreover, this paper will attempt to look at the differences between both institutions and will focus on the requirements of this position. To sum up, this article will argue many aspects of the Ombudsman model in both countries, but will reflect on the common set of working.