| Acronym | Sense | Language | Topics |
|---|---|---|---|
| OPG | Osteoprotegrin | In German | → Biochemistry, biophysics |
| OPG | Objectif Projet Groupe | In French | → Management |
| ÖPG | Österreichische Physikalische Gesellschaft (www.oepg.at) | In German | → Organizations and associations → Physics → Austria |