The Casecnan Protected Landscape is a protected area in the Casecnan River watershed of eastern Luzon in the Philippines. It has a total area of straddling the provinces of Nueva Vizcaya, Quirino and Aurora. The 57930ha Casecnan River Watershed Forest Reserve was established in August 1987 by virtue of Executive Order No. 136 issued by President Corazon Aquino. In April 2000, the forest reserve was enlarged to and was reclassified as a protected landscape area through Proclamation No. 289. It is considered as one of the last remaining substantial water source for the region of Central Luzon.