| Rank | Abbreviation | Meaning |
|---|
| ***** | PSDI | Positive Symptom Distress Index
| |
| **** | PSDI | Partito Socialista Democratico Italiano
| |
| **** | PSDI | Presence-Sensing Device Initiation
| |
| *** | PSDI | Public Safety Data Interoperability
| |
| *** | PSDI | Phase Shifting Diffraction Interferometer
| |
| ** | PSDI | Police Self Defense Institute
| |
| ** | PSDI | Professional Staff Development Institute
| |
| ** | PSDI | Police Self Defense Instructor
| |
| ** | PSDI | Pin Service Denial Indicator
| |
| * | PSDI | Pusat Sumber Daya Informasi
| |
| * | PSDI | Partnership for School District Improvement
| |
| * | PSDI | Programa Sergipano de Desenvolvimento Industrial
| |
| * | PSDI | Project Software Development, Inc.
| |
| * | PSDI | Project Software Development Incorporated
| |
| * | PSDI | Permanent Subsurface Drip Irrigation
| |
| * | PSDI | Partido Social Democrata Independente
| |
| * | PSDI | PSI and the Social Democratic
| |
| * | PSDI | Physical Symptoms Distress Index
| |
| * | PSDI | Personal and Social Development Initiative
| |
| * | PSDI | Private Sector Development Initiative
| |
| * | PSDI | Professional Skills Development Institute
| |
| * | PSDI | Public Service Directory Interactive
| |
| * | PSDI | Police Self Defense Instutute
| |
| * | PSDI | Philippine Software Development Institute
| |
| * | PSDI | Police Survival Defense Institute
| |