This thesis presents the phonological and morphological descriptions of the Štokavian Ikavian speeches in Gorski kotar, where three dialects are spoken, present in the following localities: Lič, Mrkopalj and Sunger. The introductory part explains in detail the chosen topic, research subject and objectives, and corresponding proposed hypotheses. The section on methodology describes methods implemented in the research and analysis as well as questionnaires used for on-site interviews with respondents. The second chapter discusses the three dialects of Gorski kotar and gives an overview of Kajkavian, Čakavian and Štokavian speech types from current literature. Additionally, more attention is given to past researches of the Štokavian Ikavian speeches of Gorski kotar and to the geographical and historical context of those three localities Given the chosen topic of the thesis, the third chapter focuses more on the Štokavian dialect and its Neo-Štokavian Ikavian dialect to which the chosen speeches belong. The analysis, including the phonological description (vocalism, consonantism and the system of accents of the Štokavian Ikavian speeches of Gorski kotar), can be found in the fourth chapter. By comparing Štokavian Ikavian characteristics of Gorski kotar in all three speeches with those in other Štokavian Ikavian systems and with Čakavian characteristics, it attempted to discern Štokavian, Čakavian or Čakavian-Štokavian characteristics in the phonological systems of Lič, Mrkopalj and Sunger. This chapter also offers a synchronic description of morphological characteristics of the Štokavian Ikavian speeches in Gorski kotar. The morphological analysis includes an overview of open and closed word classes, corresponding tables and a description of kept differences among systems. The conclusion either confirms or refutes the proposed hypotheses and establishes a theory on the origin of processed speeches established by the comparative analysis. Furthermore, differences among those three speech systems in line with dialectological classification are also presented. A synchronic approach (in addition to the diachronic approach) to this research also singles out isoglosses establishing the origin of observed non-indigenous speeches of Gorski kotar. A thorough analysis of the speeches of Lič, Sunger and Mrkopalj contributes to the understanding of language features of the so far only partially explored the Štokavian Ikavian speeches of Gorski kotar as well as to the efforts to further specify the dialectal situation of Gorski kotar.