| Rank | Abbreviation | Meaning |
|---|
| ***** | PGIS | Perinatal Grief Intensity Scale
| |
| *** | PGIS | Participatory Geographic Information System
| |
| ** | PGIS | Proprietary Geographic Information Systems
| |
| ** | PGIS | Product Generation Information Systems
| |
| ** | PGIS | Postgraduate Institute of Science
| |
| ** | PGIS | Partnership for Global Information Security
| |
| ** | PGIS | Pinkerton Global Intelligence Services
| |
| ** | PGIS | Pasture and Grazinglands Information System
| |
| * | PGIS | Pollutant-Generating Impervious Surface
| |
| * | PGIS | Planning and Geographic Information Systems
| |
| * | PGIS | Prostaglandin I synthase
| |
| * | PGIS | Police Geographic Information System
| |
| * | PGIS | People Group Information System
| |
| * | PGIS | Parking Guidance Information System
| |
| * | PGIS | Personal Growth Initiative Scale
| |
| * | PGIS | Proportional Gas Injection System
| |
| * | PGIS | PGI synthase
| |
| * | PGIS | Phoenix Gold Idaho Springs
| |
| * | PGIS | Portable Geographic Information Systems
| |
| * | PGIS | Provincial Government of Ilocos Sur
| |
| * | PGIS | Portugal Geographic Information Systems
| |
| * | PGIS | Participatory GIS
| |
| * | PGIS | Parasrampuria GEMS International School
| |
| * | PGIS | Police-use Geographic Information Systems
| |