Legitimasi: Jurnal Hukum Pidana dan Politik Hukum P-ISSN 2088-8813 E-ISSN 2579-5104 Vol. 10, No. 2, July-December 2021 DOI: 10.22373/legitimasi.v10i2.11341 │ Submitted: April 6, 2021 │ Accepted: October 8, 2021 │Published: December 27, 2021 https://jurnal.ar-raniry.ac.id/index.php/legitimasi 217 The Effectiveness of Adat Sanction for Khalwat Offense based on Islamic Criminal Law in Ketol, Central Aceh (Efektifitas Sanksi Adat Bagi Pelaku Khalwat: Perspektif Hukum Pidana Islam di Kecamatan Ketol Kabupaten Aceh Tengah) Satiya Citra Dewi Universitas Islam Negeri Ar-Raniry, Banda Aceh Hassanuddin Yusuf Adan Universitas Islam Negeri Ar-Raniry, Banda Aceh Satiya.citradewi@gmail.com Abstract: This study aims to first, find out what forms of customary sanctions are imposed on perpetrators of khalwat in Ketol, Central Aceh district. Second, to know the level of effectiveness of customary sanctions in Ketol District against the eradication of the crime of seclusion. Third, a review of Islamic law on customary sanctions in Ketol District for perpetrators of the crime of seclusion. The method used in this research is a qualitative descriptive method using field research and library research. The results of the research in this thesis are the settlement of the khalwat dispute in the Ketol District, Central Aceh Regency, in which the dispute is settled customarily by a deliberation process. Then each actor is charged with paying one or more oxen following the deliberation agreement between the parties. The sanctions that apply are very ineffective among people with middle and upper economic levels, for those who are middle and above do not feel the effects of the sanctions imposed, because it is very easy for them to pay the sanctions. Overview of Islamic law customary sanctions do not conflict with Islamic law because in Islamic law the sanction for seclusion is ta'zir, namely the punishment determined by the ruler or judge, which in customary law in Central Aceh who acts as a judge is Reje Kampung. Keywords: Adat Sanctions, Seclusion, Customary Law