| PPIN | Pakistan Policy Institutes Network 
| Others |
| PPIN | Parent Process Identification Number
| Others |
| PPIN | Parent Provider Information Network
| Others |
| PPIN | Personal and Professional Identity Narrative
| Others |
| PPIN | Plant Pathogen Immune Network
| Others |
| PPIN | Plant Pest Information Network
| Others |
| PPIN | Pollution Prevention Information Network
| Others |
| PPIN | Potential Problems Intervention and Notification
| Others |
| PPIN | Principles and Practices of Interconnection Networks
| Others |
| PPIN | Protected Processor Identification Number
| Others |
| PPIN | Protected Processor Inventory Number
| Others |
| PPIN | Protein Protein Interaction Network
| Others |