| Acronym | Definition |
|---|
| psis | Persatuan Sepakbola Seluruh Indonesia (Malay: All Indonesia Football Association) |
| psis | Product Safety Information System |
| psis | Posterior Superior Iliac Spine |
| psis | Pounds Per Square Inch |
| psis | Programme for Strategic and International Security Studies |
| psis | Private Security and Investigative Services (Canada) |
| psis | Population and Social Integration Section |
| psis | Personal Spine Information Service (central NHS database containing clinical records for each NHS patient) |
| psis | Preparatory School for International Students (Ukraine) |
| psis | Postsecondary Student Information System (national survey; Canada) |
| psis | Public Service Investment Society (New Zealand) |
| psis | Philippine Society for Industrial Security |
| psis | Personal Space Invasion Syndrome |
| psis | Police Station Information System (UK) |
| psis | Plastic Surgery Information Service |
| psis | Pyro's Single Image Stereogram maker |
| psis | Positioning System with Integrated Services |
| psis | Private Security Investigator Specialist |
| psis | Public Safety Information Systems |