The freshwater leech genus Orientobdelloides Bolotov, Eliseeva & Kondakov, 2022, is reported for the first time in Indonesia. Morphological and mitochondrial DNA sequence data identified the specimens as Orientobdelloides tridens (Chiangkul, Trivalairat, Kunya & Purivirojkul, 2021), a species previously known only from Thailand. The external and internal morphological features of the Indonesian O. tridens are provided in detail here, and the species diagnosis is amended based on our observations.