The Bosnian people, who had been living as part of the Ottoman Empire for four centuries, faced many difficulties under Austrian rule after the annexation of Bosnia by the Austro-Hungarian Empire in 1908. Bosnian Muslims, in parti-cular, were subjected to discriminatory and repressive practices by Austria. In addition, problems with adaptation in terms of religion, language, and cultu-re also begun to arise for Bosnians under the Austrian rule. For these reasons, Bosnians, along with other Muslim communities, began to migrate towards the Ottoman lands, which they considered safer. The difficulties and poor conditi-ons experienced by Bosnians during the migration and resettlement operations led to great suffering and misery among the migrants. In the Ottoman Archives contains documents illuminating this period, particularly concerning the mig-rations and the transfer and resettlement of Bosnian Muslims after the annexa-tion of Bosnia-Herzegovina by Austria. These documents are important becau-se they show the difficulties and struggles that Bosnian Muslims experienced during their migration to the Ottoman lands. In addition, the socio-economic change caused by this migration after the resettlement of the emigrants to the Ottoman lands are also revealed. In conclusion, the relocation and resettlement of Bosnians who became immigrants after Austria’s annexation of Bosnia cau-sed them to face great difficulties and experience a difficult adjustment process. This process was an important turning point in the history of the Bosnians and has affected the future of Bosnia. Regarding this period, ATASE (Ministry of National Defense Military History Archives) archival documents that were re-cently made public were examined. In addition, archival records such as “Yıldız Evrakı”, “Teftişat-ı Rumeli Evrakı” (“Selanik Evrakı”), “Hariciye Siyasi”, “Harici-ye Mektubi Kalemi”, “Hariciye İdari”, “Dahiliye Muhaberat-ı Umumiye İdaresi (Mektubi Kalemi)”, “Sadaret (Mühimme Kalemi Evrakı)”, “Bab-ı Ali Evrak Odası”, “Meclisi Vükela Mazbataları” were also searched with the aim of providing new information and documents to the field. Furthermore, domestic and foreign sources, along the press organs of the period, were screened for the subject, contributing to the study.