The Kampar River has been contaminated by microplastics due to various anthropogenic activities and these can accumulate in fish biota such as Rasbora cephalotaenia and Thynnichthys thynoides, which are fish commodities consumed by the community. This study aims to determine the types and abundance of microplastics in the river. The study was conducted in May 2025 at three stations: Teluk Kanid…