| NPN | NASA Part Number 
| Others |
| NPN | National Particulate Network
| Others |
| NPN | National Party of Nigeria
| Others |
| NPN | National Payment Network
| Others |
| NPN | National Performance Network
| Others |
| NPN | National Phenology Network
| Others |
| NPN | National Poultry News
| Others |
| NPN | National Preferred Notary
| Others |
| NPN | National Prevention Network
| Others |
| NPN | National Producer Number
| Others |
| NPN | National Professionals Network
| Others |
| NPN | Nationales Performance Netz
| Others |
| NPN | Natural Product Number
| Others |
| NPN | Nature Photographers net
| Others |
| NPN | Nature Photographers Network
| Others |
| NPN | nd PNP and
| Others |
| NPN | Negation, Permutation, Negation
| Others |
| NPN | Negative Positive Negative
| Others |
| NPN | Negative-Positive-Negative transistor
| Others |
| NPN | Neighborhood Parent Network
| Others |
| NPN | Neighborhood Parents Network
| Others |
| NPN | Neighborhoods Partnership Network
| Others |
| NPN | New Parents Network
| Others |
| NPN | New Practitioner Network
| Others |
| NPN | New Professionals Network
| Others |
| NPN | Next Protocol Negotiation
| Others |
| NPN | Nickel-Pincer Nucleotide
| Others |
| NPN | Nicolaus Patrick Neumann
| Others |
| NPN | No Point Necessary
| Others |
| NPN | No Polish Needed
| Others |
| NPN | No Problem Network
| Others |
| NPN | No Purchase Necessary
| Others |
| NPN | No Purchase Needed
| Others |
| NPN | No Purchase Ness
| Others |
| NPN | No Purchase Nessecary
| Others |
| NPN | Non Performing Note
| Others |
| NPN | Non Performing Notes
| Others |
| NPN | Non Protein Nitrogen
| Others |
| NPN | Non Protein Nitrogenous
| Others |
| NPN | Nonprofit Professionals Now
| Others |
| NPN | Northwest Physicians Network
| Others |
| NPN | Notes Public Network
| Others |
| NPN | Nutanix Partner Network
| Others |
| NPN | Nvidia Partner Network
| Others |