public, coeducational institution of higher learning in Pocatello, Idaho, U.S. It comprises colleges of arts and sciences, business, education, engineering, health professions, pharmacy, and technology. The university offers a wide range of associate, bachelor's, master's, doctoral, and professional degree programs. It is the seat of the Idaho Museum of Natural History. Research facilities include the Idaho Accelerator Center, the Institute of Rural Health, and the Center for Ecological Research and Education. Total enrollment is nearly 12,000.

Idaho State University began in 1901 as the Academy of Idaho. In 1915 the name was changed to Idaho Technical Institute. In 1927 it became the Southern Branch of the University of Idaho, reflecting the school's broadening curriculum. It became Idaho State College in 1947 and Idaho State University in 1963.