| Acronym | Definition |
|---|
| PNR | Parc Naturel Régional (French: Regional Nature Park) |
| PNR | Paranormal Romance (literary genre) |
| PNR | Partner |
| PNR | Passenger Name Record (airlines) |
| PNR | Place and Route (software engineering) |
| PNR | Philippine National Railways |
| PNR | Photo Noise Reduction |
| PNR | Peak to Noise Ratio |
| PNR | Palmtop News Reader |
| PNR | Policía Nacional Revolucionaria (Cuban police) |
| PNR | Point of No Return |
| PNR | Prairie and Northern Region (Canada) |
| PNR | Polymerase Chain Reaction |
| PNR | Passive Noise Reduction |
| PNR | Pinelands National Reserve (New Jersey) |
| PNR | Production Non-Recurring (engineering) |
| PNR | Polarized Neutron Reflectivity |
| PNR | Prior Notice Required |
| PNR | Pointe Noire, Congo - Pointe Noire (Airport Code) |
| PNR | Partner Network Recruitment |
| PNR | Prudential Network Realty |
| PNR | Party of the New Republic (Iraqi political group) |
| PNR | Plug and Run |
| PNR | Part Number Request |
| PNR | Proved Name Registration |
| PNR | Preliminary Negotiation Reports (US Navy) |
| PNR | Private Network Route |
| PNR | Passenger Numerical Roll |
| PNR | Passenger Number of Requisition |
| PNR | Publication Number Request |
| PNR | Project Narrative Report |