OPTA
| Acronym | Definition |
|---|---|
| OPTA | Onafhankelijke Post en Telecommunicatie Autoriteit |
| OPTA | Osteopetrosis |
| OPTA | Optimum Performance Theoretically Attainable |
| OPTA | Operational Programme Technical Assistance (EU) |
| OPTA | Orthotic & Prosthetic Technological Association |
| OPTA | Open Packet Telephony Architecture (Cisco) |