ABSTRACT Microplastics are generally defined as synthetic polymers that are under 5 mm in size. Microplastics that accumulate in water will have a negative impact on aquatic ecosystems. This study aims to analyze the abundance and types of microplastics in water and digestive organs in the Tangkerang River, Pekanbaru. The Tangkerang River is a tributary that will empty into the Sail and Siak R…