Archival institutions in Croatia are more difficult to access for people with disabilities, mostly due to the historical and cultural value of the buildings in which they are located and the impossibility of functional adaptation of the space for the aforementioned reasons. This thesis provides an overview of the legal and professional frameworks related to the rights of persons with disabilities, the work of archives and the accessibility of archives to users. In the context of this paper, persons with disabilities are defined according to the Act on the Register of Persons with Disabilities. Several successfully adapted archives from around the world are presented, and at the end, guidelines will be given that can be used by Croatian archives in adapting their institutions, externally and internally, to people with disabilities. The official websites are analyzed using a free tool for analyzing the accessibility of websites and the results of the analysis are given. Along with guidelines for adapting the building where the archive is located, guidelines for designing an accessible website are also presented. The aim of the thesis is to raise awareness of the need for adaptation of archival buildings for people with disabilities, to provide an overview of international experiences in adapting archival buildings to the people with disabilities, and draw guidelines that could be useful to Croatian archival institutions.