Turkish nationalism became an element of the Ottoman political scene in the late nineteenth century. Although its roots can be traced back to the Hamidian period (1876–1909), Turkish nationalism emerged as one of the most important political ideologies during the Constitutional Regime. Wars that the Ottoman State participated in from 1911 to the end of the empire in 1918 resulted in population and land losses. Especially, following the Balkan Wars, most of the lands that were populated by non-Muslim and non-Turkish subjects were lost. Within this context, Turkish nationalism came to be seen as the most dominant ideological tool intended to save the Empire. This article argues that Turkish nationalism emerged as a reactive ideology that addressed Ottomanism and Islamism, which were the two other dominant state ideologies during the late Ottoman State, due to the changing political context. In this article, Türk Yurdu, a well-known and influential periodical, is used as the primary source of reference to demonstrate the basic features of Turkish nationalism in its infancy.