National Institute

National Institute may refer to:
 * National Institute on Aging, United States (U.S.)
 * National Institute of Food and Agriculture, U.S.
 * National Institute of Mental Health, U.S.
 * Belgranian National Institute, Argentina
 * San Martín National Institute, Argentina
 * Instituto Nacional, Chile
 * Homi Bhabha National Institute, India
 * Tyndall National Institute, Ireland
 * Barber National Institute, U.S.