| Rank | Abbreviation | Meaning |
|---|
| ***** | PMSS | Post-Marketing Surveillance Study
| |
| ***** | PMSS | Policy and Management Support Staff
| |
| **** | PMSS | Pitt Meadows Secondary School
| |
| **** | PMSS | Property management support system
| |
| *** | PMSS | Princess Margaret Secondary School
| |
| ** | PMSS | Plafond Mensuel de la Sécurité Sociale
| |
| ** | PMSS | Port Moody Secondary School
| |
| ** | PMSS | Piping Material Service Specification
| |
| ** | PMSS | Pedestal Mounted Stinger System
| |
| ** | PMSS | Program Management Support System
| |
| * | PMSS | Palestinian Medical Students Society
| |
| * | PMSS | Program Management Support Services
| |
| * | PMSS | Personnel Management and Support Service
| |
| * | PMSS | Pine Mountain Settlement School
| |
| * | PMSS | Pacific Mountain Scale Shops
| |
| * | PMSS | Programa de Modernização do Setor de Saneamento
| |
| * | PMSS | Prime Minister Sergei Stepashin
| |
| * | PMSS | Project Management Support System
| |
| * | PMSS | Project Manager's Support System
| |
| * | PMSS | Programme Management Support System
| |
| * | PMSS | Portable Modular Source System
| |
| * | PMSS | Pregnancy Mortality Surveillance System
| |
| * | PMSS | Project Management Support Services
| |
| * | PMSS | Paul Motors Sales and Service
| |
| * | PMSS | Programa Mercosur Social y Solidario
| |