This paper researches the archaeological findings of buckles originating from the territory of the Republic of Croatia. Data on individual buckles were collected from the literature in order to provide a typological overview for the period between the 12th and the 17th century. Throughout the named period many authorities, social structures and population changed on the territory of the present-day Republic of Croatia. Those processes influenced economic changes, thereby indirectly influencing the way of clothing and fashion. However, the buckles covered in this paper represent small portion of it. In addition to the archaeological findings, the paper also contains data from written sources regarding this category of utilitarian ornamental objects, as well as visual representations by which the clothing of the given period and the buckles within the context of the traditional costumes are to be presented. The buckles are divided into four basic categories: single frame, double frame, buckles with plate and paftas which are further on categorized into different types, and are nevertheless further specified based on certain particularities in form. In addition to the individual specimens, the belt sets are also analyzed. Buckles are part of the costume and are of wide application, whereas their archaeological context has greatly assisted in determining their purpose, since most of the processed findings originate from burial sites (High and Late Middle Ages and Early Modern period). The paper presents their chronology based on archaeological finds as well as typological analogies. The paper also provides a brief overview of the usage of buckles based on the archaeological material mentioned: shoe buckles, belt buckles, mantle/cloak buckles, etc.