This article explains the extent to which Indonesia has international obligations to comply with the non-refoulement principle in the absence of ratification of the 1951 Refugee Convention. While Presidential Regulation No. 125 of 2016 concerning the Treatment of Refugees provides the general impression that Indonesia respects the non-refoulement principle, there is no specific text within Indonesian law and policy that regulates the matter. This article argues that Indonesia is legally bound by non-refoulement obligations under international human rights treaties to which it is a party, as well as under customary international law. It examines the extent of Indonesia’s non-refoulement obligations under the Convention Against Torture, the International Convention on Civil and Political Rights, the Convention on the Rights of the Child, and customary international law. It concludes that the Presidential Regulation was a missed opportunity for Indonesia to reinforce its non-refoulement obligations, as illustrated by the recent treatment of Rohingya asylum seekers near Aceh.