National Penitentiary Institute may refer to:
Federal Penitentiary Service of Argentina (Servicio Penitenciario Federal, SPF) National Penitentiary Institute of Peru (Instituto Nacional Penitenciario, INPE) National Penitentiary and Prison Institute of Colombia (Instituto Nacional Penitenciario y Carcelario, INPEC) For other prison systems, see :Category: Prison and correctional agencies