The doctoral dissertation Toponymies of the Đakovo area studies the toponymy of Đakovo and villages which are located in the Đakovo area. It is an integral analysis of the toponyms that can be found in this region. The aim of this paper is to record the toponyms of the Đakovo area and analyze the motivation behind them. Toponyms are a reflection of the culture, society, economy and spirituality of a particular place, and they represent petrified linguistic monuments of the vernacular of the Đakovo area. After the introductory part, there is a geomorphological and phytomorphological description of the Đakovo area, followed by a historical and demographic overview of the Đakovo area. The subsequent chapter analyzes the Đakovo area vernacular from the phonological, morphological, syntactic and lexical aspects. The central chapter of Toponymies is divided into two parts: the analysis of oikonyms and the analysis of all other toponyms. All items are analyzed motivationally. The toponymic corpus was collected through field work with respondents and partly taken from ARKOD. Each toponym entry lists the village area where it was found and its specific stress. The dissertation also describes settlements, their location and historical development in the chapter Mjestopis Đakovštine. All toponyms of the Đakovo area, as well as all demonyms and adjectival forms, have been listed and can be found in the appendices. The collected and analyzed onymic corpus is significant because of some major ongoing changes in agriculture and the economy in general. Lately there has been a tendency of small farms merging, which leads to the gradual loss of onyms that once had a much greater importance for the life of the Slavonian man than they do now. Today, when farming focuses on large enterprises and the small farmer is lost, naming the land has less and less significance. Finally, the emotional component of naming an object is missing when it no longer belongs to an individual, but to a business. With the help of this corpus, a large number of onyms will be preserved and added to the Croatian onymic corpus.