Oyster mushrooms are one of the potential horticultural commodities with promising prospects due to their high economic value. The Kelompok UMKM Jamur Tiram is one of the largest oyster mushroom producers in Indralaya Utara Subdistrict, Ogan Ilir Regency. This study aims to: (1) describe the product flow in the supply chain management of oyster mushrooms at Kelompok UMKM Jamur Tiram in Payakabu…