This study discusses the prohibition of same-ethnic marriage in the indigenous people of Kenegerian Logas Tanah Darat (Luhak Nan Sambilan). The author's interest in discussing this title is based on a phenomenon that occurs among the people of Kenegerian Logas Tanah Darat (Luhak Nan Sambilan) where there are still perpetrators who violate customary rules regarding same-sex marriage. And the aut…