Acronym |
Definition |
| OOR | Owner- Oriented Response |
| OP | Observation Point |
| OPCAT | Optional Protocol to the UN Convention against Torture |
| OPCW | Organisation for the Prohibition of Chemical Weapons |
| OPM | Other People's Money |
| OPPF | Olof Palme Peace Foundation |
| OPPFB | Office of Programme Planning, Finance and Budget |
| OPR | Operational Peer Review |
| OPS | Office of Programme Services |
| Ops | Operations |
| OSCE | Organization for Security and Co-operation in Europe |
| OSE | Office of Special Envoy |
| OSL | Offshore Leak (Off-shore leak 2012) |
| OSR | Own Sourced Revenues |
| OTCD | Organizations of Turkic Cooperation and Development |
| OTH | OTHer |
| OUN | Organization of United Nations |
| OUO | Official Use Only |
| OYW | One Year War |
| P5 | Permanent 5 |
| PAAS | Project Accrual and Accountability System |
| PAAS | Project Accrual and Accountability System |
| PAC | Programme Advisory Committee |
| PAHO | Pan American Health Organization |
| PAIR | Political Asylum Immigration Representation |
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