| Acronym | Sense | Language | Topics |
|---|---|---|---|
| PEM | Payload Electronics Module | In English | → Electronics → Astronautics |
| PEM | Particle Environment Monitor | In English | |
| PEM | Por-Esperanta Mormonaro | In Esperanto | → Organizations and associations → Christianity → Artificial languages (linguistics) |
| PEM | Plant Engineering and Maintenance | In English | → Maintenance and logistics |
| PEM | Privacy Enhanced Mail | In English | → Software |