Quirino State University, formerly Quirino State College, is a public university in the province of Quirino, Philippines. Its main campus is located in Diffun; other campuses are located in Maddela and Cabarroguis. Nestled in the hills of Diffun, Quirino State University is an important center of higher learning in Quirino province.
Former names: Northeastern Nueva Vizcaya High School (1963–1964) · Northern Nueva Vizcaya National Agricultural School (1964–1972) · Quirino National Agricultural School (1972–1983) · Quirino State College (1983–2012)
Motto in English: A Bastion of Higher Learning in Northern Luzon