The concept of the theater has a multi-component structure with more than one layer. The theater space is one of the fundamental parts of this multi-layered structure and differentiates and diversifies depending on the relationship that theater art establishes with society. The spatial history of Turkish theater includes changes to political and social reasons. The production practices of the theater spaces of the Republican Period, on the other hand, change depending on the position of the theater in daily life and its development processes. In the founding period of the Republic, the mission attributed to the theater in line with the ideology of establishing a modern nation-state turns the theater into an educational tool. In these years, the priority target was to convey the ideologies of the Republic to the public and to educate the public through theatre. However, since the theater is seen as a symbol of modernization, steps are taken to create an institutional Turkish theater. With the support of theater institutions by the state, the opening of schools, the development of city and state theaters, and the increase in the number of private theaters, the need for theater space and theater building increases. In this context, between the years 1923 and 1960, theater spaces took their place in the representation halls of "Türk Ocakları" and "Halkevleri", which were seen as the education and cultural centers of the period. After the 1950s, the emergence of new spaces such as cinemas and cultural centers and the increasing interest of the public in these venues resulted in meeting the need for theater spaces in these buildings. Within the scope of the article; It is aimed to read about the changes in the spatial structure and architectural features of the Republican Period Turkish Theater through the political breaks that took place in the historical process and the decisive role of changing socio-cultural dynamics. Within this scope; primarily, the development line and the history of the institutionalization of the Turkish Theater in the Republican Period will be written. Then, the spaces and structures used in the process of 1923-1960 will be determined in line with the ruptures experienced in the socio-cultural context; determined examples will be examined through architectural plans, photographs and documents. In this context, first of all, the development line and institutionalization history of the Turkish Theater in the Republican Period were discussed. Then, in the period between 1923 and 1960, the spaces and structures used in line with the socio- cultural ruptures were determined; The determined examples were examined through architectural plans, photographs and documents. The most basic gain obtained as a result of the study is to be able to see exactly in which ways and how the social developments affect the architectural characters and functions of the theater structures; therefore, it was possible to read the basic dynamics affecting architecture through concrete examples.