| Acronym | Definition |
|---|
| PAIS | Public Affairs Information Service |
| PAIS | Public Access Internet Site |
| PAIS | Path Alarm Indicator Signal |
| PAIS | Padre Island National Seashore (US National Park Service) |
| PAIS | Path Alarm Indication Signal |
| PAIS | Public Administration Information System |
| PAIS | Partial Androgen Insensitivity Syndrome |
| PAIS | Phosphoribosylaminoimidazole Synthetase |
| PAIS | Political and International Studies (various schools) |
| PAIS | Privacy and Anonymity in the Information Society (Workshop) |
| PAIS | Plan d'Action Industriel et Social (French: Industrial and Social Action Plan) |
| PAIS | Process Appraisal Information System (SEI) |
| PAIS | Portable Ada Interface Set |
| PAIS | Program and Integration Support (contract) |
| PAIS | Prototype Advanced Indications System |
| PAIS | Proyecto Agroindustrial Sixaola (Spanish: Sixaola Agroindustrial Project; Sixaola, Costa Rica) |
| PAIS | Producer-Archive Interface Standard |