ABSTRAKAceh and Turkey are kingdoms that have carried out diplomacy for a long time. The diplomacy is a collaborative effort between the two kingdoms. Diplomacy is built in harmony, which is proven by helping each other like brothers. In this established diplomacy, it focuses on the political, religious and economic fields. This article aims to examine the diplomacy carried out by Aceh and Turkey, especially in preaching Islam in the Malay region and in the trade sector. This article uses a literature review research method, by examining existing sources. The result of this study is that the diplomacy carried out by Aceh and Turkey is very important in efforts to preach Islam and trade safety. With this diplomacy, Islam can spread throughou...