Calumpang River (Filipino: Ilog Calumpang) is a perennial body of water with a catchment area of approximately 472 km2 (182.2 sq. mi) situated east of the Province of Batangas, Philippines. The river itself forms the southeastern boundary of Poblacion, Batangas City as it continues to flow southward to Batangas Bay at an approximately point of 2 kilometres (1.2 mi) east of Batangas Port.