This study analyzes the clustering of cellular operator product sales using the K- Medoids algorithm, with a case study at the Sumbagteng Regional Office of Telkomsel Pekanbaru. The study area covers the provinces of Riau, West Sumatra, Jambi, and the Riau Islands. The sales data analyzed were from September 2022, encompassing various cellular operator products, such as Telkomsel, XL, Axis, Ind…