Cocuk Dunyasi - A Child Magazine: from the Ottomanism to the Turkish Nationalism during the Balkan Wars This article focuses on the magazine of Cocuk Dunyasi published during the Balkan Wars. The magazine, published under the management of Tevfik Nureddin by the Turk Yurdu of Turkish Land under Yusuf Akçura's administration, had 79 issues in the first period of 1913-1914. This magazine has tried to bring a new identity politics to the corner, leaving the Ottoman politics followed by the publication of Turkish children's publications since 1869. This policy has become Turkish nationalism shaped by the heavy defeat of the Balkan Wars, loss of land and lives, immigration problem. The Cocuk Dunyasi has sought to build a new collective identity politics around urban, male, Turkish and Muslim rational students and to unify them around a vengeful, emotional, warlike Turkish nationalism that highlights ethnic accent. The new identity politics followed by Cocuk Dunyasi followed the nationalist policy of the Turkish dynasty under Yusuf Akçura's administration. Turkish nationalism, developed around Yusuf Akcura, had relations with Ittihat ve Terakki community and become effective with the publishing of Turk Yurdu. Cocuk Dunyasi, one of the publishing of Turk Yurdu, had expressed prominent elements of Turkish nationalism for a new child and citizen identity appropriate for this period. Therefore, in this article, the identity politics of the Cocuk Dunyasi was evaluated as an element of the Turk Yurdu, and the Cocuk Dunyasi was examined together with the books published by the Turk Yurdu Library for children.