Topik penelitian ini adalah variasi leksikal di Kecamatan Air Hitam, Kabupaten Sarolangun. Penelitian ini bertujuan untuk mendeskripsikan, menentukan perhitungan persentase menggunakan suatu metode yaitu metode dialektometri dengan pendekatan kuantitatif dan kualitatif. Pendektan kuantitatif melihat persentase variasi kebahasaan, sedangkan pendekatan kualitatif mendeskripsikan variasi leksikonnya. Dari penghitungan dialektometri jarak kosakata isolek tiga desa menunjukkan bahwa (1) antar isolek desa Lubuk kapayang dan isolek desa Baru dianggap tidak ada perbedaan, (2) antar isolek desa Baru dan isolek desa Semurung dianggap tidak ada perbedaan, dan (3) antar isolek desa Semurung dan isolek desa Lubukkapayang dianggap tidak ada perbedaan. Sementara itu, variasi leksikon dalam isolek tiga desa di Kecamatan Air Hitam tersebut dari 200 glos terdapat 38 glos yang bervariasi. Sedangkan jarak kosakata dari tiga TP tersebut adalah ILK – IB 13%, IB – IS 12,5%, dan IS – ILK 12% dengan keterangan tidak ada perbedaan. Abstract The topic of this research is lexical variation from three villages in Air Hitam District, Sarolangun Regency. This study aims to describe, determine the percentage calculation using a method that is the dialectometric method with quantitative and qualitative approaches. The quantitative approach looks at the percentage of linguistic variation, while the qualitative approach describes the variation of the lexicon. The dialectometry calculation of the vocabulary distance of the three villages isolates shows that (1) between the isolates of the Lubuk kapayang village and the isolates of the Baru village there is no difference, (2) between the isolates of the Baru village and the isolation of the Semurung village there is no difference, and (3) between the isolates of the village Semurung and isolek of Lubuk Kapayang village were considered as no difference. Meanwhile, the variation of the lexicon in the isolates of the three villages in the Air Hitam Subdistrict, out of 200 glosses, there were 38 variations. While the vocabulary distance of the three TPs is ILK-IB 13%, IB-IS 12.5%, and IS-ILK 12% with the description there is no difference.