The Bigbiga Protected Landscape is a protected landscape of forested hills, open grasslands and natural springs in Ilocos Sur in the northwestern part of the island of Luzon, Philippines. It is one of five protected landscape areas in the Ilocos Region under the Philippines' National Integrated Protected Areas System. The park has a total area of 135.71 hectares located entirely within the municipality of Narvacan. It was created in 1939 as the Bigbiga Spring Watershed Forest Reserve by virtue of Proclamation No. 431 signed by President Manuel Luis Quezon. In 2000, it was reclassified as a protected landscape by Proclamation No. 290.