| Acronym | Sense | Language | Topics |
|---|---|---|---|
| GPI | Gimbal Position Indicator | In English | → Astronautics |
| GPI | Ground Position Indicator | In English | |
| GPI | Glycophosphatidyinositol | In English | → Biochemistry, biophysics |
| GPI | Grands Périmètres Irrigués | In French | → Agricultural sciences → Environmental technology, water supply, waste management |