The Jalaur River, also known as Jalaud River, is the second longest river on Panay island in the Philippines, with a total length of 123 km (76 mi) and the second largest by drainage basin after Panay River in Capiz. The Jalaur has a drainage area of 1,503 square kilometres (580 sq mi). Its source is in the Central Panay Mountain Range, west of Calinog, and the river traverses east to southeast before emptying into the Guimaras Strait. It drains the eastern portion of Panay and courses through Passi City and the towns of Leganes, Zarraga, Dumangas, Barotac Nuevo, Pototan, Dingle, San Enrique, Duenas, and Calinog, all in Iloilo province.

Panay is the sixth-largest and fourth-most populous island in the Philippines, with a total land area of 12,011 km2 (4,637 sq mi) and has a total population of 4,542,926 as of 2020 census. Panay comprises 4.4 percent of the entire population of the country. The City of Iloilo is its largest settlement with a total population of 457,626 inhabitants as of 2020 census.