The purpose of this paper is to examine how nationalism has been operated and emerged in the process of establishing the National Theater of Korea and Sejong Center for the Performing Arts, National Gugak Center, and Seoul Arts Center. I analyze the records about the construction of the theaters from the viewpoint of nationalism. Also I examine how the nationalistic view had been expressed architecturally and how the characteristics were revealed in the performances. The history of the construction of the theaters was entirely led by the state during the 3rd, 4th and 5th republics. The 3rd, 4th and 5th republics, all of which had been ruled by undemocratic regimes, emphasized nationalism in order to compensate their lack of legitimacy. The ‘nation’ has worked as a very effective concept to unite the whole people into a single identity, and traditional culture as well as art have been used as the most effective means of raising national pride. As such, the construction of the theaters as an infrastructure for expanding traditional performing arts was essential, and it was actively promoted in this background. At the height of this flow, which began in the 1960s, there was the 1988 Seoul Olympic Games.