PMM
- Makarov PM
- Pacific Meridional Mode
- Partido ng Manggagawa at Magsasaka
- Partidul Moldova Mare
- Pectoralis minor
- Perchloromethyl mercaptan
- Percona
- Permanent Multipurpose Module
- Permanent magnet motor
- Perpetual motion machine
- Plant matrix metalloproteinase
- Predictive mean matching
- Prime Minister of Malaysia
- Printing and the Mind of Man