PGS
- Alliance of Primorje-Gorski Kotar
- PGS Entertainment
- Parkstone Grammar School
- Participatory Guarantee Systems
- Pate's Grammar School
- Penistone Grammar School
- Petroleum Geo-Services
- Physicians for Global Survival
- Pittsburgh Geological Society
- Plant Genetic Systems
- Polygenic score
- Poole Grammar School
- Portsmouth Grammar School
- Preimplantation genetic diagnosis
- Presentation Graphic Stream
- Prompt Global Strike
- Protected Geographical Status