INP may stand for:
- INP (Korea), a Korean chemical company
- INP (database), an early database system developed at the University of California, Berkeley
- Integrated National Police, a forerunner of the Philippine National Police
- Budker Institute of Nuclear Physics
- Indium phosphide
- INP InformaciĆ³n de negocios y Procesos, a software and web development company in South America